I am taking DC (12 & 6) to meet an old friend coming from the USA with her two DC (15 & 11), in central London on a Sunday afternoon at the end of Feb. Old friend has been to London before but not for years and although I grew up in London, I now live outside and my DC don't go in that often. Looking for recommendations of things to do/see that might please all ages/budgets (I have a limited one!) please! She says her DC will be happy wandering about, going on a double-decker bus, getting something to eat etc which sounds fine to me - although I know my 6yo won't really like just wandering around - will get tired/bored and start to whinge 😂- so it would be good to have a kind of plan. They're going to be staying around Bloomsbury so pretty central. TIA.