London’s bus routes faced some drastic changes following cuts in funding. However, it looks as though the 113 and other routes are safe for now. The full list of changes is:
https://www.mylondon.news/lifestyle/travel/full-list-london-bus-changes-25705063

This article explains a number of changes you can expect to see on the London underground:
https://www.mylondon.news/news/local-news/london-underground-13-big-changes-25792022.

Brent Cross West station is due to open in 2023:
https://www.mylondon.news/news/north-london-news/brand-new-thameslink-station-set-25859759
https://transformingbx.co.uk/transformation/brent-cross-west/new-station/