| Postcode | Coverage Area |
| HA4 | Ruislip,Eastcote(West And South),South Ruislip,Ruislip Manor,Ruislip Gardens |
| HA5 | Pinner, Eastcote (North And East),Hatch End, Rayners Lane (North),Carpenders Park(Part) |
| HA6 | Northwood,Northwood Hills,Moor Park |
| TW6 | Heathrow Airport |
| TW14 | Feltham(Part Of Thestationarea), North Feltham,East Bedfont,Hatton |
| TW19 | Stanwell,Stanwell Moor,Wraysbury,Sunnymeads,Hythe End |
| UB3 | Hayes(South),Harlington |
| UB4 | Hayes(North),Yeading |
| UB5 | Northolt |
| UB7 | West Drayton,Harmondsworth,Sipson,Yiewsley,Longford |
| UB8 | Uxbridge,Cowley,Hillingdon(Part) |
| UB9 | Denham,Harefield |
| UB10 | Hillingdon,Ickenham |
| UB11 | Stockley Park |
| WD3 | Rickmansworth,Chorleywood,Croxley Green,Loudwater,Mill End,Maple Cross,Sarratt,Batchworth,Chenies,Harefield(Part),West Hyde,Heronsgate, Chandlers Cross |