BBC News OnlineCopyright: Megan Allen
That's the end of our live coverage of today's heatwave.
It did not quite reach the expected record-breaking 39C but at a high of 38.1C in Cambridge, it certainly felt hot enough for many and was a record for July.
Thank you for all the pictures of you, your families and pets enjoying or enduring the heat.
To finish, here is Ezra chilling in Rutland and Erin in Kent being lovingly protected from the sun's rays by her thoughtful friends and family.Copyright: Roger Harris
Adam Bruce said he was on a train outside St Pancras when an overhead cable snapped and hit the carriage.
"It banged along the side of the train then we came to a halt in the tunnel," he said.Copyright: Adam Bruce
"[We were] stuck in there for many hours with very little air conditioning.
"Eventually the train was evacuated. No windows were broken thankfully and nobody hurt."
Network Rail said that "damage to the overhead electric wires between Luton and London St Pancras International is resulting in all lines being blocked".
Major disruption is continuing on the trains.
National Rail is reporting problems until the end of the day including:
Earlier we showed you the ingenious way one Southampton bus traveller was keeping cool on his way to work.Copyright: Stef Miernik
But before you rush out to do the same, we thought we'd share the official advice of Stef's bus operator.Quote Message: We appreciate the need for everyone to stay as cool as possible in this extremely hot weather and this is incredibly resourceful thinking from one of our customers. However, these USB ports are designed for charging mobiles and tablets, so we suggest not plugging in anything too big. from Richard Tyldsley General Manager, Bluestar
Although the heat is causing misery for many people on trains, elsewhere across the country people have been enjoying the weather.
The Sidor family from Southampton spent a day in the sun in their local park.
Miroslav Sidor sent us this picture showing a relaxing day with his wife Darja, daughter Sofia and dog Gucci.Copyright: Miroslav Sidor
Passengers are reporting chaos on the East Coast mainline and National Rail says it's because overhead wires have been damaged just north of Peterborough station.
Major disruption is expected to trains on the line until the end of service.
- Great Northern and Thameslink services will be cancelled or amended to not run between Huntingdon and Peterborough
- LNER services are currently suspended to and from London Kings Cross
- East Midlands Trains and CrossCountry services will be delayed by up to 20 minutes
- Hull Trains services will run between Doncaster and Hull only
- Customers are advised not to travel between London and Doncaster
- Grand Central will be delayed, cancelled or revised with no trains at London Kings Cross
Zoe Greenfield was travelling from London King’s Cross to Glasgow when the train stopped outside Peterborough due to a line failure
The train was evacuated and Ms Greenfield saw five ambulances and several people taken ill.
She said passengers were in good spirits but the heat was "unbelievable".
There was an "excellent response from train staff who were clearly under a lot of strain," she added.
The Met Office says it's "unlikely" the UK's all-time heat record will be broken today as temperatures have started to drop.
It reached 38.1C at Cambridge at about 16:00, 0.4C less than the current record of 38.5C set in 2003.
Eurotunnel journeys have been hit with delays of up to two-and-a-half hours after earlier cancellations.
Roger Piepenstock, from Hitchin in Hertfordshire, tweeted this picture.
"Eurotunnel booked for 3:30pm, it’s now looking like we’ll leave at 7pm," he said.
"A lady collapsed with the heat and it took 30 mins for an ambulance to come.
"The terminal was completely overcrowded."
A statement on Eurotunnel's website said: "In these exceptionally hot conditions, we remind our customers that toilet facilities, free wifi and air conditioning are available in our passenger buildings"
BBC News Online
Go on then, here is one last update of some dogs, starting with Spud from Solihull.Copyright: Jag Brainch
Lewis Murch said his dog Rocky has not left this spot in front of the fan all day.Copyright: Lewis Murch
And this dog in Broughton, Hampshire, has taken to wearing a wet cloth to try and cool down.Copyright: Emma Greep
Severe disruption on the railways caused by "extremely high" temperatures could affect services on Friday, the Rail Delivery Group (RDG) has warned.
The RDG, which represents train operators and Network Rail, said there was "severe disruption" across the country but particularly around London and the South East of England.
Director Robert Nisbet said the heat was affecting metal track and overhead cables, with 20 out of 26 operators impacted.
He said: “We believe there could be roll-on impacts tomorrow, because many of the trains will be in the wrong places, many of the rail staff will be in the wrong places and it will take time to re-set, to stabilise the timetable again.
"We could see disruption up until the weekend.”
And this, ladies and gentleman is why you don't leave pets in cars. At least Lucy can keep the door open...
Redditors have been sharing some fairly ingenuous ways to keep cool during this hot weather.
Stef Miernik shared this idea of using a USB powered fan on the bus.Copyright: Stef MiernikQuote Message: I saw the USB ports on the bus and thought instead of charging my phone, I could plug my fan in here. I gave it a go and it worked. I also noticed that I could hook the stand over the back of the seat if no one was using it. from Stef Miernik Life-hacker
Before you rush to plug in other USB powered devices, it's best to check with the bus driver first.
Footballer turned presenter Dion Dublin tweeted this picture of crowds waiting for delayed trains at London Euston.
Sarah Wyatt was all hot and bothered earlier going up and down ladders and crawling to reach boxes in the archives at the National Motor Museum at Beaulieu in the New Forest.
She's since picked a better task for the conditions. Stay cool Sarah.