Need to occupy the tribe on my own on Sunday out of the house so dh can work. Thinking of going up to London (though open to other suggestions). I want to keep it cheap too. Went to British Museum a month ago, so not there. Imperial War Museum at half term, was probably a little old for our crew (7, 5 + 2:5 yrs old). Has been a year since we went to science + nat history so will end up there if no other better ideas. They are all into history, they loved Tower of London, but hoping for something a bit easier on the wallet. Some appreciation of art but not sure will enjoy a gallery for more than an hour. Anywhere I haven't thought of?