Determined Brits have made the most of the long weekend by flocking to beauty spots across the country – despite the mixed weather and travel chaos threatening to spoil Bank Holiday plans.
Day-trippers have piled in to picturesque parts of the UK today, including Durdle Door in Dorset.
Families and groups of friends packed out the popular spot on the Jurassic Coast, basking in the sunshine and going for a dip in the sea.
Others made the most of the intermittent spells of sun by flocking to Cullercoats Bay in North Tyneside, while the annual cheese rolling festival in Gloucester attracted hundreds of dairy-loving thrill-seekers.
In true Brit style, many braved the brief spells of rain to make the most of their extra day off.
The unsettled weather is set to last all week, with the southwest of the UK set for patchy rain on Monday night.
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On Tuesday, Brits living in the north and east are set for a bright start, though cloud and rain across the southwest could move northwards during the day.
For the rest of the week, there will be a mix of sunny spells and scattered showers – some of which will be heavy, with hail and thunder, according to the Met Office.
Families also faced having their Bank Holiday plans ruined after trains were suspended, ferry passengers faced two-hour waits and more than three million drivers hit the roads.
Avanti West Coast advised customers not to travel to or from London Euston station after a major signal failure blocked all lines between the capital and Milton Keynes.
The chaos came on top of pre-planned Network Rail engineering work on the West Coast Main Line route resulting in longer journeys between London and Scotland.
This included bus replacements between Preston and Carlisle, and Carlisle to Glasgow or Edinburgh; and an amended service between Stafford and Crewe.
In London, there was disruption on the Elizabeth line between Paddington and Southall due to a speed restriction imposed over defective track; while Overground trains faced delays due to an object becoming stuck in overhead power cables.
It was also a busy day to drive, with the RAC estimating 3.4million motorists will be on the roads today on the final day of the three-day Bank Holiday weekend. The worst period for congestion today is expected to be between 11am and 2pm.
In addition, DFDS Ferries warned customers of a ‘busy day’ at the Port of Dover in Kent and told them to allow 120 minutes to complete border control and check-in.
And thousands of Britons were stuck in queues for hours at Birmingham Airport amid ‘shambolic’ and ‘terrible’ scenes while families fly away on half-term holidays.
Avanti West Coast said today: ‘Due to a severe signalling failure in the Cheddington area, we are advising customers not to travel to or from London Euston.’
But one angry passenger tweeted the operator to say: ‘Thanks again for another disastrous journey from the North to London – I don’t how know you manage it!’
Another said: ‘Avanti West Coast cancelling a load of trains again last minute. Absolute shambles of a company, not fit for purpose.’
And a third added: ‘When you make a point of booking yourself onto an early train only to be told there will be delays.’
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All lines between Milton Keynes and Watford Junction were closed for a period this morning. While they have since reopened, travellers were still being warned of cancellations this afternoon.
Passengers were told tickets dated for today could be used tomorrow – with travel on different routes between London, the Midlands and North West also encouraged after ticket acceptance was put in place with other operators.
But there were also problems on Thameslink trains due to a signalling fault between St Albans and West Hampstead; and on Transport for Wales between Shrewsbury and Wrexham due to an emergency incident.
Further north on ScotRail, there was disruption between Edinburgh and Helensburgh Central and between Airdrie and Balloch due to a fault on a train at Airdrie.
The Met Office said low pressure would remain slow-moving across the British Isles today, maintaining a changeable theme that was also seen over the weekend.
However it was cooler today than over the weekend – which saw highs of 21.6C (70.9F) in London – with a brisk breeze in the South and West.
The Met Office has issued a yellow thunderstorm warning for northern and eastern areas of mainland Scotland from 11am until 10pm today.
Greg Dewhurst, meteorologist at the Met Office, said: ‘There are some subtle differences – I think generally, England and Wales will see less frequent and less heavy showers compared to Sunday, so there should be some longer, drier spells in between.
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‘But it is worth, if people are heading out, having a brolly and raincoat as there is a chance almost anywhere of having a shower, true for Northern Ireland too, actually.’
Thicker cloud is expected move in across south-west England by the end of the day with the chance of patchy rain, but any lingering showers should fade as the evening progresses.
Another frontal system will move in tomorrow from the West and rain will spread across many areas following a bright start in the east, with temperatures staying around average.
By Wednesday, low pressure will continue to dominate the weather with many areas seeing a mix of sunshine and showers, which could be heavy and thundery in places.
This low pressure will then begin to move away to the east on Thursday, but it will again be sunny and wet for many areas – although western areas could turn drier.
Eastern areas will still be under the influence of low pressure by Friday which will continue the showery theme, but western parts will likely see a drier day.
The Outer Hebrides and the Isle of Skye had a separate warning for rain in place from midnight to 9am this morning but it is not expected to be as heavy.
The Environment Agency has issued 22 flood alerts for England, all in southern areas.