Postal sector SW1A 2
- Downing Street, London, SW1A 2AA
- Downing Street, London, SW1A 2AB
- King Charles Street, London, SW1A 2AH
- King Charles Street, London, SW1A 2AQ
- Whitehall, London, SW1A 2AS
- Whitehall, London, SW1A 2AT
- Whitehall Place, London, SW1A 2AW
- Whitehall, London, SW1A 2AX
- Whitehall, London, SW1A 2AY
- Spring Gardens, London, SW1A 2BA
- Spring Gardens, London, SW1A 2BB
- Whitehall Place, London, SW1A 2BD
- St. James's Park, London, SW1A 2BJ
- Spring Gardens, London, SW1A 2BN
- Parliament Street, London, SW1A 2BQ
- Whitehall, London, SW1A 2BS
- Whitehall, London, SW1A 2BX
- Whitehall, London, SW1A 2BY
- Whitehall, London, SW1A 2DB
- Whitehall, London, SW1A 2DD
- Derby Gate, London, SW1A 2DG
- Charing Cross, London, SW1A 2DR
- Charing Cross, London, SW1A 2DX
- Whitehall, London, SW1A 2DY
- Whitehall Court, London, SW1A 2EF
- Whitehall, London, SW1A 2EG
- Whitehall Court, London, SW1A 2EH
- Whitehall Court, London, SW1A 2EJ
- Whitehall Court, London, SW1A 2EL
- Whitehall Court, London, SW1A 2EP
- Westminster, London, SW1A 2ER
- Whitehall Court, London, SW1A 2ES
- Horse Guards Avenue, London, SW1A 2HB
- Whitehall Place, London, SW1A 2HD
- Whitehall Place, London, SW1A 2HE
- Great Scotland Yard, London, SW1A 2HJ
- Great Scotland Yard, London, SW1A 2HN
- Whitehall, London, SW1A 2HP
- Horse Guards Road, London, SW1A 2HQ
- Victoria Embankment, London, SW1A 2HR
- Horse Guards Avenue, London, SW1A 2HU
- Victoria Embankment, London, SW1A 2JH
- Canon Row, London, SW1A 2JJ
- Victoria Embankment, London, SW1A 2JL
- Canon Row, London, SW1A 2JN
- Bridge Street, London, SW1A 2JR
- Bridge Street, London, SW1A 2JX
- Bridge Street, London, SW1A 2LW
- Parliament Street, London, SW1A 2LZ
- Parliament Street, London, SW1A 2NE
- Parliament Street, London, SW1A 2NH
- Whitehall, London, SW1A 2NL
- Whitehall, London, SW1A 2NP
- Spring Gardens, London, SW1A 2TS
- Victoria Embankment, London, SW1A 2TT
- The Mall, London, SW1A 2WH