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          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D82,W82:AM82",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F82",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D82",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East_Midlands",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East_Midlands",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "East_Midlands",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "East_Midlands",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East_Midlands",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G1393",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H1393",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L1393",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P1393",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN1393",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "K189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "K189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    },
    "E12000005": {
      "population": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D122",
          "transformation": "direct value"
        }
      ],
      "age_18_24": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "W122:AC122",
          "transformation": "sum single-year ages 18\u201324"
        }
      ],
      "age_25_34": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "AD122:AM122",
          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D122,W122:AM122",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F122",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D122",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "West_Midlands",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "West_Midlands",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "West_Midlands",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "West_Midlands",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "West_Midlands",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G1532",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H1532",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L1532",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P1532",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN1532",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "L189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "L189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    },
    "E12000006": {
      "population": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D157",
          "transformation": "direct value"
        }
      ],
      "age_18_24": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "W157:AC157",
          "transformation": "sum single-year ages 18\u201324"
        }
      ],
      "age_25_34": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "AD157:AM157",
          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D157,W157:AM157",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F157",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D157",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "East",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "East",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "East",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G1671",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H1671",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L1671",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P1671",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN1671",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "M189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "M189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    },
    "E12000007": {
      "population": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D208",
          "transformation": "direct value"
        }
      ],
      "age_18_24": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "W208:AC208",
          "transformation": "sum single-year ages 18\u201324"
        }
      ],
      "age_25_34": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "AD208:AM208",
          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D208,W208:AM208",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F208",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D208",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "London",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "London",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "London",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "London",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "London",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G1810",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H1810",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L1810",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P1810",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN1810",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "N189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "N189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    },
    "E12000008": {
      "population": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D242",
          "transformation": "direct value"
        }
      ],
      "age_18_24": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "W242:AC242",
          "transformation": "sum single-year ages 18\u201324"
        }
      ],
      "age_25_34": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "AD242:AM242",
          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D242,W242:AM242",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F242",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D242",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_East",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_East",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "South_East",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "South_East",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_East",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G1949",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H1949",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L1949",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P1949",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN1949",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "O189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "O189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    },
    "E12000009": {
      "population": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D313",
          "transformation": "direct value"
        }
      ],
      "age_18_24": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "W313:AC313",
          "transformation": "sum single-year ages 18\u201324"
        }
      ],
      "age_25_34": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "AD313:AM313",
          "transformation": "sum single-year ages 25\u201334"
        }
      ],
      "young_share": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE2 - Persons",
          "cell_range": "D313,W313:AM313",
          "transformation": "100 \u00d7 ages 18\u201334 / all ages; round to 2 decimals"
        }
      ],
      "density": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE5",
          "cell_range": "F313",
          "transformation": "direct value"
        }
      ],
      "median_age": [
        {
          "file_id": "population_mid_2025_xlsx",
          "sheet_name": "MYE6",
          "cell_range": "D313",
          "transformation": "direct value"
        }
      ],
      "households": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_West",
          "cell_range": "B14:B19",
          "transformation": "sum household-size categories; thousands"
        }
      ],
      "one_person_share": [
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_West",
          "cell_range": "B14,B14:B19",
          "transformation": "100 \u00d7 one-person households / constructed total; round to 2 decimals"
        }
      ],
      "unrelated_adults": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "South_West",
          "cell_range": "B16",
          "transformation": "direct value; thousands"
        }
      ],
      "unrelated_share": [
        {
          "file_id": "household_types_2025_xlsx",
          "sheet_name": "South_West",
          "cell_range": "B16",
          "transformation": "numerator: two or more unrelated adults; thousands"
        },
        {
          "file_id": "household_size_2025_xlsx",
          "sheet_name": "South_West",
          "cell_range": "B14:B19",
          "transformation": "denominator: sum household-size categories; round result to 2 decimals"
        }
      ],
      "rent_growth": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "G2088",
          "transformation": "direct value for July 2026"
        }
      ],
      "rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "H2088",
          "transformation": "direct value for July 2026"
        }
      ],
      "one_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "L2088",
          "transformation": "direct value for July 2026"
        }
      ],
      "two_bed_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "P2088",
          "transformation": "direct value for July 2026"
        }
      ],
      "flat_rent": [
        {
          "file_id": "private_rents_july_2026_xlsx",
          "sheet_name": "Table 1",
          "cell_range": "AN2088",
          "transformation": "direct value for July 2026"
        }
      ],
      "house_price": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "2",
          "cell_range": "P189",
          "transformation": "direct value for June 2026"
        }
      ],
      "house_price_growth": [
        {
          "file_id": "house_prices_june_2026_xlsx",
          "sheet_name": "3",
          "cell_range": "P189",
          "transformation": "direct annual change for June 2026"
        }
      ]
    }
  }
}