A friend of mine is displaying some work at the Chelsea Craft Fair at Chelsea Town Hall soon and dp and I are going to drive there so that we can take it in turns to visit while the other one amuses the children (the thought of our 2-year-old running amok amongst the porcelain is the stuff of nightmares!). Does anyone know of any parks or anything near there for a 2 and 4 year old? Also any tips on where to park (it will be a Saturday or Sunday). Thanks.