- SF (3,686)
- NMS (3,583)
- LIN (3,078)
- NLM (2,372)
- LEIC (2,265)
- WILT (2,192)
- GLO (1,831)
- YORYM (1,792)
- SWYOR (1,632)
- WMID (1,602)
- SUR (1,597)
- BH (1,371)
- WAW (1,369)
- HAMP (1,335)
- KENT (1,323)
- LVPL (1,135)
- PUBLIC (1,067)
- DENO (1,050)
- SUSS (1,041)
- BERK (1,016)
- HESH (947)
- IOW (944)
- ESS (942)
- SOM (871)
- NARC (652)
- LANCUM (620)
- NMGW (611)
- BUC (600)
- CORN (528)
- DOR (499)
- PAS (421)
- NCL (405)
- CAM (356)
- DUR (315)
- FASW (274)
- OXON (237)
- FAKL (204)
- LON (194)
- FAHG (151)
- DEV (127)
- BM (89)
- ASHM (82)
- RESEARCH (73)
- WREX (71)
- FAPJW (66)
- GAT (65)
- NFAHG (55)
- CPAT (47)
- SOMDOR (42)
- WMAS (41)
- DYFED (15)
- FAJN (9)
- DEN (4)
- (1)
- STAFFS (1)