This 'snow event' will produce a covering of snow for the South East - with maybe 5-10 cms over higher ground and hills .... before turning to drizzle and light rain and temperatures climb to +1 to +3c ... so a gradual thaw of any lying snow .... especially as the sun sets at 5pm now....
Places like Central London will be lucky to see any lying snow as temperatures likely to be 1-3c above freezing ...