Hundreds of Britons have flocked to beaches and parks to bask in the warm bank holiday weather, prompting authorities to urge people to "use common sense".
Images have emerged of packed beaches on Bank Holiday Monday, with reports of congestion around beauty spots as people take advantage of the easing of lockdown restrictions in England earlier this month.
Shortly before 12pm, Bournemouth Council said all its seafront car parks were full and told residents to "think twice" before visiting the beach.
A social media user who drove past Swanpool Beach in Falmouth reported seeing the "car park overflowing, hundreds of cars on surrounding roads, beach packed".
In west London, police say they were called to reports of a "large group gathering" at Ruislip Lido, and urged the public to "use common sense".
Pictures showed Botany Bay and Margate Main Sands in Kent packed with beachgoers, while large crowds were also seen at Weston-super-Mare beach.
Temperatures were forecast to hit 24C (75.2F) in London today, and will still be in the 20s across other areas.
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Ahead of the bank holiday, tourism bosses had pleaded with the public to stay away from beauty spots, with Sefton Council in Merseyside employing a "Wish you weren't here!" campaign.
Some have dubbed today's packed beaches as the "Cummings effect", as Boris Johnson's senior adviser Dominic Cummings is embroiled in a row for travelling 260 miles from London to Durham during the lockdown.
Police chiefs have warned Mr Cummings' actions could undermine their ability to enforce social distancing rules.
According to the rules, people should keep two metres away from anyone who is not in their household, and should not meet more than one person from another household at a time.
The #Cummings effect. Just drove past Swanpool Beach in Falmouth. Car park overflowing, hundreds of cars on surrounding roads, beach packed. Yesterday, same weather, few people on beach. One hospital in the county one of the highest #rrate in the UK.
Thank you @BorisJohnson.
— Arthuria Mullard (@ArthuriaMullard) May 25, 2020
Consequences of yesterday. This road down to the beach has been pretty empty for last 8 weeks. Today they are queueing. Well done Johnson/Cummings!! pic.twitter.com/JPSJLsbLNv
— Richard Bradley (@rich_DE_HD) May 25, 2020
Temperatures on Monday were expected to soar to 21C (69.8F) in Newcastle, 20C (68F) in Edinburgh and Belfast and 22C (71.6F) in Southampton.
The South West was predicted to be slightly cooler, with 17C (62.6F) forecast for Land's End in Cornwall.
Sky News's weather presenter Nazaneen Ghaffar said high pressure dominating the weather this week means it will be fine and dry with "plenty of warmth and sunshine" for most places.