See Google maps.
The nearest station is Kew Gardens (District Line, Richmond branch), which lies in zone 3. The National Archives is roughly a 10-minute walk from the station. For more information visit www.tfl.gov.uk/mobile.
The R68 bus route (from Hampton Court via Richmond) terminates by the entrance to The National Archives. Other routes stopping nearby include: 65 (Ealing to Kingston via Richmond), 237 (Shepherd's Bush to Hounslow Heath via Chiswick), 267 (Hammersmith to Fulwell via Brentford), and 391 (Fulham to Richmond via Hammersmith).
Kew Gardens (see Tube details above) is also served by the London Overground. Kew Bridge station is approximately a 20-minute walk away. Richmond station is one Tube stop (or a 10-minute bus ride) away. For more information visit www.nationalrail.co.uk/mobile.
The National Archives is half a mile south of Kew Bridge on the A205 (South Circular Road) and near to the M4. Limited car parking space is provided free of charge on a first come, first served basis.