Yes -4 to -5 uppers is marginal ! But we had 12" overnight Saturday and carried on most of Sunday, I was ten at the time and hadn't got a clue about weather back then,
But looking back now the key was it snowing at night and just how heavy it was, was a key factor, But it wasn't just the Midlands the south and southwest had it also.
If you look at the Dam-528 line on both days, Well south of us.
Whoops!...Sorry Sunday going into Monday, Come on......It was many a moon ago