I wandered up to the Croydon Airport site (Roundshaw Downs) as the weather seemed to have lifted a little and arrived just after 2pm just as the next band of clag and drizzle/rain blew through - normally get quite a good view of London west of Westminster from maybe 300'. Couldn't actually see much clearly beyond the NW corner of the common, probably less than a mile. Looked at ADSB and saw the formations skedaddling back to their bases across Norfolk - good decision - and decided to head home myself! Actually vaguely saw the sun for a brief moment just before I got back.
Oh well.