| City | 2026 Pop. ↓ |
|---|---|
| Hillingdon | 337,556 |
| Hounslow | 305,116 |
| Havering | 282,365 |
| Harrow | 274,274 |
| Hackney | 267,843 |
| Haringey | 261,872 |
| Highland | 238,014 |
| Huntingdonshire | 194,116 |
| Herefordshire | 192,238 |
| Hammersmith and Fulham | 189,009 |
| Horsham | 155,246 |
| Halton | 132,699 |
| Havant | 128,076 |
| Hinckley and Bosworth | 118,556 |
| Hertsmere | 111,544 |
| Harborough | 108,457 |
| Hart | 105,127 |
| Harlow | 100,718 |
| Hartlepool | 99,579 |
| High Peak | 92,226 |
| Hastings | 91,091 |
| Hyndburn | 87,277 |