North Wales has had some mega-falls over the years.
Think there was a snow event in the 50s that gave some huge totals in NW England, whilst one of the wartime 1940s events was possibly worse (a train near here crashed into a snow drift deeper than it was tall, I read once)
And the far SE has had some massive falls from the east.
Not all in one fall. but some uplands regions in the UK accumulated some considerable depths during the winters of 1946-7 and 1962-3. ISTR that we're talking of 6 feet or so as the greatest in any inhabited place.
Not of that order, but by the beginning of January 1963 we had around 37 cm of lying snow here in Cranleigh. That's probably about double the greatest depth we have had since. It came in three falls: about 17 cm on 26-27 Dec, about the same amount on 29-30 Dec (but with a lot of drifting on that occasion, making the depth difficult to assess), and another 8 cm on the evening of the 31st. I know that adds up to more than 37 cm, but though there was no visible melting I assume there must have been some compaction over that period, and maybe a bit of sublimation too, and 5 cm seems a reasonable allowance for that. As the total depth was substantially more than the maximum that my one foot school ruler could cope with, I could only measure each new fall on a previously cleared surface rather than the total depth.