We are heading to London in the Easter holidays and have plenty of day time activities sorted but am looking for a few evening activities that my 9 and 11 year olds might like. I don't think budget will stretch to a show, unless anyone can point me in the direction of something a bit cheaper. We are staying fairly central (Covent Garden). I suspect most evenings will consist of a meal and a wander but any suggestions for something a bit more special would be welcome. Thank you!