I see many posts on those who have used the 2-4-1 offers (http://www.daysoutguide.co.uk). I wouldd like to query all on which you feel are the "BEST" 2-4-1 offers in London.
I imagine that Tower of London, Churchill War Rooms, London Eye will be on most lists, but would like to see which others people recommend. First time to London - would like to print them out ahead of time - but just looking for everyone's experiences by listing which are recommended. Thanks !