Good morning all...
Angry looking out to my West and some ditsant rumbles of thunder, if you're in London at the moment Harry you may be right, some major convection kicking off especially to my North this morning, and the storm to my West over the city has pushed out quite a lot of outflow overhead so its going very grey while turning black out West.
Looks to be moving NNE, watch out up the M11.
EDIT: Also rapid development of convection to my distant NNE, radar shows it just beyond Chemlsford, towers grew rapidly and have started putting out an anvil. Another closer rumble from the London storm too.
EDIT: Weak gust front pushing NE'wards out ahead of the rain, very fast moving with lots of ragged scud.
Whole thing seems to have weakened very rapidly.