Well, I have monitored snow events in this area for the past few years and there seems to be quite often a barrier to snowfall here that does not happen elsewhere. Often it seems to snow in Ely, Peterborough and Cambridge, whilst we receive rainfall.
I recall an event last year where Hertfordshire received 1 foot of snow and up here, we had flooding. I have also seen events that looked to produce heavy snowfall through showers produce heavy rainfall (Sunday was an example).
There just seems to be something stopping snowfall in this area, and i'm not sure what it is. I understand that the wind direction has an affect, but events seem to fizzle out also.
You would think that this area would be best located for snowfall in East Anglia, but it is not.