We are unexpectedly in London for the coming days and last minute trying to find something fun and productive with 8-10 year olds. Would anyone have good recommendations for courses/ camps? Broadly interested. Eg dance, drama, coding, tennis .. most things work. Separately, any good Christmas experiences suggestions also appreciated - such as Winter Wonderland, rose garden in Grosvenor sq and Christmas at Kew, which we would all recommend.