Thunder first heard at 11.02 pm, increasing in loudness and frequency followed by intermittent moderate rain then a fairly short spell of really heavy rain. All the lightning was cloud-to-cloud and there was quite a lot of it. All over by just after midnight BST.
Looking at the rainfall radar, upper air charts and the Blitzortung site I'd say that the activity had moved NNE at about 50 kn so there were probably no serious rainfall totals.
Quite like old times, really.
On the 0030 Radio4 forecast we warned to watch out for thunderstorms affecting Hampshire, Sussex and Surrey but by the time those words were uttered it had already been quiet here for 20 minutes. I dunno.
Tudor Hughes, Warlingham, NE Surrey, 557 ft, 170 m.