Love the lines and curves here. Did you know it is Open House weekend in London this weekend? Check out the website if you have time. You'll get into all sorts of buildings that are not normally open. You are so good at architectural photography, you might enjoy it. https://www.openhouselondon.org.uk/
I had forgotten all about it - a friend reminded me! Like you, too late for ticketed ones but I did get into the Royal Albert Hall today with a visiting 356er from Australia, so that was great fun.
:)
and the local mosque: https://365project.org/rumpelstiltskin/365/2017-09-16
Invariably, I leave it too late to visit the locations that require tickets, but I might see which buildings don't require pre-booking for Sunday.