Nicholas is correct - it was the 24h to 0900 UTC yesterday, the 29th. It is the EA gauge at Honister and the total was 212.8mm.
https://www.itv.com/news/border/2020...-day-on-record
A quick web search reveals a site run by a den of sceptics that tries to demolish the record, even hilariously by discrediting the time period, stating that UK daily rainfall should be read at 09h not 10h - forgetting about summer time. However, in amongst such drivel they have unearthed a previous record at Bruton (Sexeys Sch) Somerset of June 28 1917. I had an idea that this had been rejected - otherwise the MO would not have said what they said about the new record this week.
Here's the URL - it really is awesomely annoying..but does show a photo of the site....
https://notalotofpeopleknowthat.word...ut-to-be-fake/
Julian