Ive been planning this trip early/mid sept for a few months now and I am having a real issue finding things to do/open past 5pm. Pretty much everything seems to only be open until then, maybe 6pm. An example of a day I am having an issue with are days like the imperial war museum and the natural history museum. I plan to end the trips there around 2pm, and that gives little time to get to/see anything else. The only real exception seems to be the national gallary on certain days (I think fridays or saturdays its open till 8. I know one or 2 days its open late) but everything else isnt.
Of course there are plenty of things to see that are free and open all day but I plan to see those on other days/as im heading to sites (for instance, im seeing westminster so ill stop at trafalgar and walk past big ben) Or Saint pauls (walking past some of the roman remains along the way).
Any ideas on what is open later in the day? They dont have to be free but id like some extra things to do .