| Code | Name | Region |
|---|---|---|
| GBBA5 | Blackburn | ABD |
| GBBLB | Blackburn | LAN |
| GBBBS | Blackbush | |
| GBBFP | Blackford | ABD |
| GBBFR | Blackford | PKN |
| GBBLA | Blackford | SOM |
| GBBCF | Blackfordby | LEC |
| GBBKI | Blackhall Colliery | DUR |
| GBBK5 | Blackheath | SAW |
| GBBHT | Blackheath/london | |
| GBAKR | Blackmoor | HAM |
| GBBKX | Blackmore End | ESS |
| GBBKS | Blackness | FAL |
| GBBLK | Blackpool | LAN |
| GBBCO | Blackrod | BOL |
| GBBNX | Blackwell | DBY |
| GBBIT | Birstall | LEC |
| GBBWH | Birstwith | NYK |
| GBBIR | Birtley | GAT |
| GBBIE | Birtley | NBL |
| GBBIP | Bishop Auckland | DUR |
| GBBHN | Bishop Thornton | NYK |
| GBBSP | Bishopbriggs | EDU |
| GBQWR | Bishops Castle | SHR |
| GBBPC | Bishop's Cleeve | GLS |
| GBBFM | Bishops Frome | HEF |
| GBBPG | Bishops Itchington | WAR |
| GBBPY | Bishops Lydeard | SOM |
| GBBST | Bishop's Stortford | HRT |
| GBBPW | Bishop's Waltham | HAM |
| GBPQT | Bishopsteignton | DEV |
| GBBPK | Bishopstoke | HAM |
| GBBSW | Bishopsworth | BST |
| GBBOP | Bishopton | RFW |
| GBBIY | Bisley | GLS |
| GBISL | Bisley | SRY |
| GBBIB | Binbrook | LEC |
| GBBFI | Binfield | BRC |
| GBBAM | Bingham | NTT |
| GBBGY | Bingley | BRD |
| GBINE | Binley | COV |
| GBBNL | Binley | HAM |
| GBITA | Binstead | IOW |
| GBBCV | Birch Vale | DBY |
| GBBCI | Birchington | KEN |
| GBZAC | Birchwood | |
| GBBTS | Bircotes | NTT |
| GBIRA | Birdham | |
| GBBIM | Birdham | WSX |
| GBBDP | Birdlip | GLS |