plenty of GA - not mentioned by the media
I'm rather surprised that there's apparently been no coverage of the aircraft that are flying. I used to work on BBC regional news and if I were there now I'd have had a crew and reporter at Popham like a shot to do the "but some aircraft are still flying in Britain" angle and we'd have got it onto national news. They all seem mesmerised by the "Britain's airspace is closed" line.
If you've been flying today (I haven't) it might be worth giving
the local radio station a bell - good promotion for private flying just tell them how safe it is with no ash at low altitude etc.