Green oasis amid the city traffic

This is a wonderful place and off the tourist route but a short walk from County Hall or The Houses of parliament, over lambeth Bridge is this green oasis full of weird gardening tools and videos of mechanical shrubbery racing around?! A great vegetarian cafe too. when we were there you could get a lunch for £3-50 and sit outside amongst the herbs and next to this delightful knot garden. Capt. Bligh of the Mutiny On The Bounty fame is buried nearby in an ornate tomb as well as other notables. The Archbishop of Canterbury's Palace is next door which is private most of the year but the gardens are open on certain days for fetes etc. Sometimes a nun will pop out the side gate and polish the brass bell push and letter box.