Not sure how to describe it, but it looks most like soft hail or
somesuch here for the last hour in Bournemouth (centre, seafront area).
Quite heavy and has settled on all surfaces. Looks like it's very
localised as the radar doesn't really pick it out - from my vantage
point on the East Cliff, it looks like it's just a very narrow stretch
along the coast, so possibly the cliffs are coming into play.

Jonathan