As you’re discovering November is a bit of a strange time for Canada. Locals call it shoulder season… I’ve been mountain biking in November on dry trails; I’ve also been at -15C and with plenty of snow on the ground. So the best thing is to be flexible. It’s already snowing in the bugaboos as I type..
In general the coast / Vancouver Island will be warmer and wetter but with less snow than the interior.
So for non-snow:
Low level trails in Squamish / North Shore should be rideable.
You might be able to do some sea kayaking.
Hike the beaches and surf on West coast of Vancouver Island.
For snow:
DH Ski if there is enough coverage
Cross country ski
Hike and admire the countryside
If you head over to Canmore area / rockies there is often some early season ice climbing to be had. Tends to be a bit thin but coming from the UK you’d probably be used to that.. 😆