London Weather in December

#7. <blockquote>Quote
<hr>I thought we had a bit last Christmas.<hr></blockquote>The bookies make a fortune every Christmas from such wishful thinking punters. If London does get snow it normally arrives for a couple of days in late Jan or Feb. The last white Christmas in the south-east was about 1970. So not good odds ;)

#5. Buxton in England and Braemar in Scotland are the coldest places. I've been to both and can believe it. Never been to Rickmansworth though...

Typically January and February are usually the coldest, you can see climate averages on the BBC Website - here

An umbrella and a scarf. Even if it's not snowing it's still cold. You'll probably need both. Or, buy them in London and keep them as reminders of your trip.