London's Country Garages started using garage codes in 1935, some time after the Central Area.
As a Country bus frequently ran on several routes during a day's duty, running numbers were allocated on a garage basis rather than for particular routes. So DG 24 seen on a GS on route 471 would mean it was Dunton Green's duty 24, not its 24th duty on route 471. (This was different from Central area practice).
Another difference in practice arose from the over-nighting of GreenLine coaches. The long green Line routes from one side of the Country zone, through the Capital to the other side, meant that these routes were usually operated from two Country garages out on the edges. Some duties had a coach ending up at the "wrong" garage. Next morning it would wear the duty plate of THAT DAY's starting garage.
Privatisation of London Country saw much property and operations separated for sale, with lease agreements, to enable management buyouts in the property-expensive London suburban doughnut. This inevitably led to the redevelopment of many garages by their owners, and a plethora of small yards acquired from small operators: a reversal of the process in 1933 when LPTB took over a host of small operators and built new garages to consolidate the fleets.
| Code | Garage | Opening dates, notes | Closure dates, notes |
|---|---|---|---|
| - | Aylesbury (Tofeld's Garage) | Red Rover (Green Line from 1932) | closed, 1933 |
| AY | Aylesbury | Luton & District | Arriva The Shires |
| BL | Slough (Alpha Street) | LGOC | closed, LPTB, 20/04/33 |
| - | Bishops Stortford | LGOC (for National), 1928 | closed, LPTB, 1934 |
| BS | Bishops Stortford | Acme (Green Line from 1932) | closed, LPTB 09/34 |
| CM | Chelsham | LGOC (for E.Surrey),20/01/25 | closed, LCSW 1990 |
| CL | Cranleigh | Aldershot & District: LCSW from 1991 | Arriva G&WS |
| CR | Crayford | LGOC | closed, LPTB, 1934 |
| - | Crayford (municipal) | used by BoroLine, then Kentish Bus | relinquished |
| CY | Crawley | East Surrey, 1929 | closed, LC, 21/11/82 |
| CY | Crawley | LC, 21/11/82 | Metrobus |
| - | Debden | Frontrunner SE, LCNE 06/89 | closed |
| DB | Dunstable | Luton & District | closed |
| DG | Dunton Green | LGOC (for E.Surrey),**/04/22 | closed, Kentish Bus 15/02/98 |
| DS | Dorking | LGOC 06/32 | closed, LCSW 1990 |
| DT | Dartford | M&D, LPTB from 1933 1986 new garage | 1986 Arriva Kent Thameside |
| - | East Ham | Battens, LPTB from 1933 | closed, 1935 |
| EG | East Grinstead | East Surrey, 1925 | closed, LC, 29/12/81 |
| - | Egham | Green Line | closed, LPTB, 06/36 |
| EP | Epping | Green Line, 09/34 | closed, LT, 21/05/63 |
| - | Ewhurst | A&D, LPTB from 1933 | closed, LPTB 1935 |
| GD | Godstone | LGOC (for E.Surrey),20/01/25 | closed, LCSW 1990 |
| GF | Guildford | LGOC 03/32 | Arriva Guildford & West Sussex |
| GR | Garston | 18/06/52 | Arriva The Shires |
| GY | Grays | LPTB, 02/36 | closed, Arriva 1993 |
| GY | West Thurrock | Arriva 1993 | Arriva Southern Counties |
| GA | Grays (Argent Street) | Eastern National, LT from 195* | closed |
| HA | Harefield | Filkins & Ainsworth | closed, LPTB, 01/01/36 |
| - | Harpenden | Green Line (rented from Comfy Coaches), 1930 | closed, LPTB, 1936 |
| HA | Harlow | LT, 1963 | Arriva |
| HE | High Wycombe | LGOC (for Am&D), 1929 | closed, LC, 30/09/77 |
| HF | Hatfield | LGOC (for National),1922 | closed, 18/02/59 |
| HF | Hatfield | LT, 18/02/59 reopened 09/88 | closed, LCNE 06/88 closed, 11/89 |
| HG | Hertford | LPTB, 02/01/35 | closed, 04/89 |
| - | Hertford Heath | Skylark (Green Line from 1932) | closed, 1935 |
| HH | Hemel Hempstead (Two Waters) | LPTB, 1935 | closed, Arriva, 1995 |
| HH | Hemel Hempstead | Arriva The Shires 1995 | Arriva The Shires |
| HN | Hitchin | LPTB, 12/33 | closed, LT, 27/04/59 |
| HW | High Wycombe (Cressex) | The Shires 1992 | closed, LT, 27/04/59 |
| - | Hoddesdon | Sampsons, 03/89 Sovereign | closed |
| LH | Leatherhead | LGOC (for E.Surrey),01/06/25 | closed, 1999 |
| LD | Luton & Dunstable | Arriva The Shires | Arriva The Shires |
| LN | Luton | Luton & District | closed |
| LS | Luton (Langley Street) | Road Cars, LGOC from 1925 | closed, LGOC 1928 |
| LS | Luton (Park Street West) | Strawhatter, LPTB from 1934 | closed, LC, 29/01/77 |
| MA (AM) | Amersham | Am & Dist., 15/09/19 | closed, LPTB, 1936 |
| MA/MA | Amersham | LPTB, 1935 | closed, 1992 |
| MM | Merstham | Arriva 1996 | closed, Arriva 04/01 |
| NF | Northfleet | LPTB, 07/37 | Arriva Kent Thameside |
| - | Ongar | Associated Coachways (then GL) | closed, LPTB 09/34 |
| - | Romford (White Hart) | LGOC, 1923 | closed, LGOC, 1928 |
| RE | Romford (London Rd) | Hillmans reopened in 1946 | war closure in 09/42 closed, LC, 02/07/77 |
| RF | Romford (North Street) | Green Line: rented fropm Ice & Cold Storage Co. | given up, LPTB 11/38 |
| RG | Reigate | LGCS 1932 | closed, Arriva 1996 |
| - | St Albans (Hatfield Road) | StAlbans & District | closed, LPTB, 1936 |
| SA | St Albans | LPTB 1936 | closed, LCNE 1991 |
| SJ | Swanley | LGOC (for E.Surrey),21/10/25 First Orpington Southlands Coaches | closed, 1986: later LCSE, closed 08/89 closed closed |
| - | Slough (Alpha Street) | 1930, leased by Green Line | closed, 01/33 |
| SL | Slough (Bath Road) | Premier Line, rented by LPTB 1933 | closed, LPTB 12/36 |
| SL | Slough (Langley Road) | LGOC LPTB 01/34 | 03/36 closed, 1937 |
| SL | Slough | LC 1984 | 2/93 sold to Q-Drive |
| - | Slough (Alpha Street) | 1930, leased by Green Line | closed, 01/33 |
| - | Slyfield | Blue Saloon, LCSW 1997 | closed |
| SV | Stevenage (Fishers Green) | 1955 | closed, 18/04/59 |
| SV | Stevenage | 18/04/59 | closed, 08/91 |
| SV | Stevenage (Norton Green) | 08/91 Luton & District | Arriva The Shires |
| TG | Tring | Chiltern Bus Service, LPTB from 1933 | closed, LC, 02/04/77 |
| TW | Tunbridge Wells | Autocar, East Surrey 1928 reopened in 1946 | war closure in 9/42 LT, 02/12/67 |
| - | Waltham Abbey | LGOC, 1926 | closed, LGOC, 1933 |
| WA | Watford (High Street) | closed, LT, 28/04/59 | |
| - | Watford Parade | Bucks Express (Green Line from 1932) | |
| WB | Wycombe Bus Station | 12/89 LCNW | Arriva The Shires |
| WE | Ware (Park Road) | Peoples | closed, LPTB, 1935 |
| WE | Ware | Arriva | Arriva The Shires & Essex |
| WG | Wyatts Green | Frontrunner SE, 06/89 County | closed |
| - | Woking (St.Johns) | local, taken over by LGOC 1931 | closed, LGOC 1931 |
| - | Woking (Walton Road) | A&D, taken over by LGOC 1931 | closed, LGOC 05/33 |
| WK | Woking | A&D, LCSW from 1991 | Arriva G&WS |
| WR | Ware (Town Hall) | Harvey & Burrows, then National, LPTB in 1933 | closed, LPTB,02/01/35 |
| WR | Ware (Park Street) | Peoples, LPTB from 1933 | closed, LPTB 02/01/35 |
| WR (WC) | Windsor | Green Line 01/33, extended by LPTB 1936 | closed, LC 1984 |
| WT | Watford (Leavesden Rd) | LGOC (for National),25/08/20 | closed, LGOC, 1/25 |
| WT | Watford (Leavesden Rd) | LGOC (for Green Line),1929 | closed, LT,17/06/52 |
| WY | Weybridge | closed, LPTB 06/36 | |
| WY | Addlestone | LPTB 06/36 | closed, 1997 |