There are upcoming strikes on TfL services:
19, 21 Nov - Elizabeth line.
From 22 Nov - buses. Exact dates and affected routes detailed on link above. Best to assume no service on affected routes. If any of those routes do manage to run a service it will be extremely limited.
26 Nov - National Rail with impact on London Overground.
Hoping to be able to share more details soon. Conscious we are just 3 days away from start of Elizabeth line strike so will try to get this info out as soon as possible.