A roads in Zone 2 of the Great Britain numbering scheme
List of A roads in zone 2 in Great Britain starting south of the River Thames and east of the A3.
Single- and double-digit roads
| Road | From | To | Notes |
| A3 at The Borough, Central London | A20 at Dover | The section between Three Crutches and Brenley Corner has mostly been replaced by the M2 Motorway for long-distance traffic | |
| A2 at New Cross, South East London | A2 at Dover | ||
| A20 at Lewisham, South East London | Hastings | The section from Badgers Mount to Chipstead has mostly been replaced by the M25 Motorway to complete the belt around London. | |
| A23 at Purley | A2280 & A2290 at Eastbourne | ||
| A203 at County Hall, Central London | A259 at Brighton | Formerly included part of Westminster Bridge Road. | |
| A3 at Clapham | A259 at Worthing | ||
| A20 at Wrotham Heath, Sevenoaks, Borough Green | A3 at Guildford | ||
| A20 at Maidstone | A259 at Newhaven | ||
| A259 at Pevensey | A36 at Whiteparish | ||
| A254 at Margate | A21 at Baldslow | ||
| A24 at Capel | B2259 & B2166 at Bognor Regis |