This is the one weekend in the year when you can visit gardens in London not usually open to the public, enjoy special activities and discover gardens you didn't know existed.

Try the SOAS Japanese-Inspired Roof Garden, or the British Medical Association Council Garden- an elegant town garden designed by Lutyens at the heart of the BMA headquarters. Guided talks, refreshments, produce.

19 gardens in Bloomsbury are taking part.

http://www.opensquares.org/map.php?cluster=Bloomsbury&lang=en