I can confirm that Dee Dee. Amazing lightning show, followed by frequent thunder and torrential rain. Mainly between 11 pm and 2 am here. 

It's been thundery showers all through last night and still going now but 99% all high level stuff so pretty bored with it now, give me my sunshine back.

just scrolling back thru our CCTV from last night, and there were 3 Separate storms, ans amazing lightning showing up 

Yes, it was spectacular last night. Was hoping it would clear away the heat and humidity but its back and even worse now! Sticky trousers time again. Yuk

Navy blue skies and thundering here now 

I been seeing lot of towering clouds and anvils from the north of here all afternoon while here sunny and not humid now.

Brum really taking a pounding with flash flooding and large hail being reported. Old report, but the Met Office is reporting 58.5mm in one hour at Winterbourne earlier this evening.

https://twitter.com/tanveer_khatana/status/1000800092352327680

https://twitter.com/StormchaserUKEU/status/1000795456992169985

Cracking storm for here last night - mostly missed one very active cell at about 11PM which was drifting up somewhere to the east, giving some rain and a few flashes here but got a more or less direct hit from another one a little while later that had lighting every few seconds and near constant thunder and some biblically heavy rain

Fair bit of rubbish across the roads locally on my bike ride today and a few flooded bits, although less evidence of anything down towards Hythe/Romney way so not sure what they had down there.

Humidity levels which were very high first up dropped during the ride and it ended up hot and sunny but less close - looks like the Midlands and up towards Liverpool are getting the activity now, quite an impressive line of storms/showers on the radar

Patchy clouds here now and just had a sharp shower. Can also hear distant thunder, so keeping my fingers crossed for a night time light show!  

Been thundering on & off here for past 4 hours or so

just walked outside and this really seems to be developing into something quite big, it feels like the storms just north of us are back building , thunder closer and louder now 

very very close , wind really picking up

No rain as yet

Milton Keynes area getting battered

Being treated to the best high level lightning show I’ve ever seen
All to my NW now

Clear overhead here but a huge anvil from the storms currently tracking up through Befordshire/Northants has very annoyingly been blocking out the setting sun this evening.

Indeed, very impressive radar image. The Hampstead Storm of August 1975 must have looked very similar to the radar image of the Chiltern Storm today. 

Here in Lowestoft, I've heard several rumbles of thunder in almost stationery line of storms this afternoon. Very impressive massive altocumulus castellaus clouds before is turned overcast. It slowly died out in situ this evening.

It seems we're not alone in having severe storms;

https://www.rt.com/usa/427978-maryland-flash-flood-emergency/?utm_source=browser&utm_medium=push_notifications&utm_campaign=push_notifications.

http://www.bbc.co.uk/news/uk-england-birmingham-44275045

Flooding in Birmingham yesterday, with photos. 58mm in one hour in Winterborne (but 3mm total in Coleshill only 10 miles away)