Looks like floodlighting on the central tower of the Houses of Parliament.
see 1st cap >>9983154 for comparison.
That is a bike, heavy black/dark frame.
Small advert sign on side of rear wheel.
Most likely a 'Boris bike' hire bike.
Strut from rear wheel hub towards saddle is silver/light colour & frame black.
Sign is very pale possibly light blue/white.
Appears to have a black bag in the handlebar basket.
Brexit contempt laid bare: How Angela Merkel 'interfered in general election'
https://www.express.co.uk/news/uk/1312326/brexit-news-eu-uk-trade-talks-angela-merkel-germany-general-election-spt