Another must-see for me in London was of course Tower Bridge. When I visited a few years back, I drove over it briefly at night but didn't get a chance to walk over and see it in all its glory. We started at London Bridge and then walked over to Tower Bridge, which is a really nice walk along the water. There are some really cute outdoor restaurants along the water as well with an awesome view of the bridge but it was a bit colder that day - it would definitely be nicer during the spring/summer. We spent a while taking photos at different distances from the bridge and luckily got them before the fog rolled in as you'll be able to see in the last photo.
P.S. I'm wearing my knockoff Arctic Monkeys sweatshirt that I bought at a random shop on Oxford Street for £25.
Thanks for all of the lovely feedback on my London posts so far! I have maybe two more left and then I can move onto other things haha.