I'd say we had up to 7 cm on the right surfaces (photos from about 8.00 am). Driving into Bath Uni - some patches with a lot less, now almost gone. Up the hill at the uni and there had been more than Warminster, I'd suggest. (I'm on the SW edge of Warminster, near the little Tesco).
Certainly a nice last hurrah. I also struggle to recall a winter with two falls so far apart (Mid Dec we had a couple of inches too). The difference was the mid Dec lasted a week with almost no melting...