I don't see any comment on your trying to go to the British Library WITH luggage? on Friday. That may not be doable. It would be better to do the Library first (if you can store luggage) for hour or so (to see Treasures Room), THEN walk to the British Museum, just eat lunch there to save time, and leave when you need to, like 2:30 Which doesn't leave you much time, maybe 2-3 hours, in the Museum, but better than none. Or just spend what time you have in the Museum--after the pace you've set yourself for those days, you may not want to pack a day. The Brit Lib IS worth the effort; leaving the area to get lunch at Camden Market is NOT worth the hassle on that day; the Brit Museum IS worth all of that day that you have.

I have a feeling that Friday is going to end up being one or the other - Brit Lib or Museum. But we'll have to play that one by ear. I agree - I double checked the map and Camden Market is out for that day. I think I mis-read someones comment about proximity.

The verger tours at Westminster Abbey are very worthwhile IMO. See info towards the bottom of this page: http://www.westminster-abbey.org/visit-us/guided-tours

St. Pauls may close to tourists at 5:00, but you can certainly attend choral evensong, which starts at 5:00 and is a wonderful experience regardless of your religious affiliation or lack thereof.

https://www.stpauls.co.uk/worship-mu...horal-evensong

Thank you all so much. I have researched and just posted our 4.5 day Paris itinerary here. You guys were so great and helpful I would appreciate any additional insight you can offer for the Paris leg of our trip. Thank you very much.
http://www.fodors.com/community/euro...-itinerary.cfm

I would change order on Thur the 25th. Go the National Gallery in the morning and HCP in the afternoon. That way, you can leave HCP at the close, take the train back to Waterloo and do a quick walk over to the Eye if it is a nice evening. The Eye is open late so good time to do it without criss crossing London to do so.