The big problem lies with Scotland. Even here – 13 miles north of Perth, if the clocks stay unchanged, in mid-December sunrise won’t be until 0945, with sunset at 1640. Further north it’s even worse. By the time you get to Inverness the times are 0958 and 1630 respectively - and those timings depend on clear skies, not exactly the norm up here in winter.
So, in practical terms, in my area a dull day would see it still dark at ten in the morning, in Inverness quarter of an hour later.
On a purely personal basis, I would be happy to see the clocks stay unchanged - as things stand, on a dull day it is effectively dark soon after three, but that's not how most folk see it.
Mike