By the end of November you are down to a little over 8
hours of
daylight, the sun will be rather low for a good portion of that, and the
weather will be, well, British. In which case another time of year would
be preferable.
Good month for fog? Also December.
https://commons.wikimedia.org/wiki/File:Bow_Locks_in_fog.jpg
Bow Locks.
Gordo