The great Easter getaway began on Thursday 18 April, with disruption on the roads and rail lines.
Stations and routes were closed for the weekend, while 12 million road journeys were taken over the Easter period.
Extinction Rebellion protestors threatened to shut down Heathrow on Good Friday.
Around 12 million car journeys will be taken during bank holiday weekend, figures from RAC show.
There are expected to be around 4.4 million journeys today, and traffic jams will peak between 11am and 4.30pm.
According to traffic analysis firm Inrix, the worst delays are expected on the M5 southbound. Delays of an hour are expected, so drivers should plan ahead.
National Express is warning that the “Extinction Rebellion” protest that is blocking key junctions in London means serious disruption on at least nine routes connecting the capital with airports and destinations in the Midlands and north of England.
The Oxford Tube shuttle is disrupted and missing out central London calling points. These services, as well as Megabus links to and from the capital, are experiencing significant delays due to congestion caused by the blockages.
Due to extensive engineering works on the West Coast route, London Euston will be closed with no services to or from the station for the entire Easter weekend, from Friday 19 to Monday 22 April 2019.
Those using this line are advised by Virgin Trains to avoid travelling on these dates unless absolutely necessary.
Tickets will be valid on the Bakerloo Line between Harrow & Wealdstone and Paddington - passengers are advised to allow up to 45 minutes for this journey.
Three million British travellers are expected to fly from UK airports during the Easter period, according to the UK Travel Retail Forum.
The retail group is reminding them to fly responsibly to continue the decline of disruptive behaviour in airports and on planes.
In 2018, the Civil Aviation Authority recorded 413 incidents of disruptive behaviour, which remained broadly stable from previous years despite a hike in passenger numbers.
Last year, 14 UK airports participated in the One Too Many (OTM) campaign, which educated travellers about excessive drinking before a flight.
According to the RAC, the afternoon and early evening on Thursday; the middle of the day on Friday; and for the few hours around lunchtime on Saturday, Sunday and Monday are going to experience the biggest disruption on the roads.
The M25 is predicted to be the most congested route on Thursday, Sunday and Monday.
On Friday, the M6 in Lancashire and western parts of the M62 will be busiest.
And on Saturday it’s the A303 through Wiltshire heading for Devon and Cornwall, and the M4 west between the Severn crossing and Cardiff.
If your train is delayed or cancelled this Easter, here is how to claim compensation.
The Independent's travel correspondent Simon Calder has put together an explainer on everything you need to know about road and rail disruption this Easter.
There are no Gatwick Express train services on Friday or Saturday, due to planned engineering works. Passengers should use Southern and Thameslink services from London Bridge instead.
On Easter Sunday there is a reduced service every 30 minutes between Gatwick airport and London Victoria.
On Monday, the service is running a revised timetable with four trains an hour between Victoria and Gatwick/Brighton.
Customers should check National Rail Enquiries for more information.
The Severn Tunnel connecting London Paddington, Swindon and Bristol Parkway with Newport, Cardiff and Swansea is closed for electrification work from Friday to Monday, and the link from Newport via Chepstow to Gloucester is also closed. Passengers between South Wales and stations to London will spend 45 minutes on a bus between Bristol Parkway and Newport, adding an hour to journey times overall.
In London, Oxford Circus and Waterloo Bridge remain closed due to the climate change protests. Traffic is slow-moving around both areas, says TfL. Delays are expected all day.
If you're flying to Europe this Easter, there will also be disruption.
It's predicted to be the busiest Easter on record for the UK's major airports, and there are strikes in Spain and Portugal.
Security staff at Madrid airport have been on strike for the past week in a pay dispute, with long waits building up – last weekend it took as long as 90 minutes to get through security checkpoints. Security staff at railway stations in Madrid will be striking for two hours a day until 28 April.
There is a risk of severe storms in the Costa del Sol area today, affecting flights to the leading holiday airport of Malaga.
Worse disruption is expected when around 60,000 ground staff at Spanish airports strike on Easter Sunday and the following Wednesday, 24 April. The industrial action is being coordinated by the Union Sindical Obrera and Union General de Trabajadores in a dispute over workers’ contracts. Talks with the employers were held on Wednesday but broke down, and the stoppages look like going ahead.
The Spanish government has stipulated that 45 per cent of international flights must operate, along with all scheduled departures between Spain’s islands and the mainland.
For more information on disruption in Europe over Easter, see Simon Calder's explainer here.
As well as Euston station being closed, other journeys on the West Coast train line will be affected over the Easter weekend.
From Friday 19 to Sunday 21 April, rail replacement coaches will operate between Rugby – Coventry – Birmingham International.
From Saturday 20 to Monday 22 April, services between Crewe and Preston will be diverted via Manchester Piccadilly, with extended journey times.
On Saturday 20 and Monday 22 April (until midday), there will be no train services from Lancaster to Glasgow Central / Edinburgh; rail replacement coaches will be in operation.
On Sunday 21 April, there will be no train services from Preston to Glasgow Central / Edinburgh; rail replacement coaches will be in operation.
On Sunday 21 April, services between Crewe and Liverpool Lime Street will be diverted via Stockport, not calling at Runcorn. West Midlands Trains will operate between Crewe and Runcorn.
Various other routes are only operating one train per hour:
Easter & Bank Holiday disruption Information - Virgin Trains
There may be a spanner in the works. We will be running engineering works over the Easter and May Day periods. Please check if your journey will be affected, before you travel.TfL has announced several travel updates for the London Underground over Easter weekend.
On Friday 19 and Monday 22 April, there will be no service between Edgware Road and Aldgate (via Victoria) on the Circle line due to track maintenance work. Travellers are advised to use alternative Tube and local bus routes.
On Friday 19 and Monday 22 April, there will be no service between Aldgate East and Barking on the Hammersmith & City line due to track replacement work. Rail replacement buses will run.
On Saturday 20 and Sunday 21 April, there will be no service between Liverpool Street and Barking on the Hammersmith & City line due to track replacement work. Rail replacement buses will run.
On Good Friday 19 and Easter Monday 22 April, there will be no service between Hammersmith and Barking or Edgware and Wimbledon / Kensington (Olympia) on the District line. Travellers are advised to use alternative Tube and local bus routes.
On Saturday 20 and Sunday 21 April, there will be no service between Earl’s Court and Wimbledon or Aldgate East and Barking on the District line. Rail replacement buses will run.
Piccadilly Circus in London is also being "blocked intermittently" by climate change protesters. Waterloo Bridge and Oxford Circus are still closed.
Transport for London advises using alternative routes.
If you're planning on taking one of the predicted 12 million leisure journeys this Easter weekend, make sure you have enough water with you. The weather is going to be sunny, warm and dry, according to the Met Office.
The Met Office and the RAC have some tips for those driving this weekend:
Extinction Rebellion activists have threatened to disrupt Heathrow Airport tomorrow, which could cause chaos to travellers over the Easter weekend.
The UK's major airports are expected to be extremely busy this weekend with Easter traffic.
TfL has warned of planned disruption on the London Overground this Easter weekend.
Until further notice (except during planned line closures) there will be a reduced service every day between Gospel Oak and Barking. This is due to a lack of available trains. Trains will run about every 30 minutes. Supplementary buses will also run.
From Good Friday 19 until Easter Monday 22 April there will be no service between Gospel Oak and Barking. Rail replacement buses will run between Gospel Oak and Seven Sisters (for South Tottenham) and between Walthamstow Central and Barking. Use Tube or local bus services between Seven Sisters and Walthamstow Central.
There will also be no service between Euston and Kilburn High Road. Use Tube or local bus services.
Trains will not stop at Whitechapel; use local bus route 205 to/from Shoreditch High Street or bus route D3 to/from Shadwell.
On Friday 19 and Monday 22 April, there will be a reduced service between Stratford and Willesden Junction / Richmond; trains will run about every 15 minutes.
On Saturday 20 and Sunday 21 April, there will be no service between Willesden Junction and Clapham Junction. Use local buses.
On Sunday 21 April, there will be no service between Liverpool Street and Enfield Town / Cheshunt (via Seven Sisters) / Chingford until 10.15am: use Tube or local bus services between Liverpool Street and Seven Sisters. Rail replacement buses will run between Seven Sisters and Enfield Town / Cheshunt and between Hackney Downs and Chingford.
There will also be no service between Sydenham and Crystal Palace on Sunday. Use local buses; rail replacement buses will run between Crystal Palace and Norwood Junction / West Croydon.
From Monday 22 until Thursday 25 April, there will be no service between Hackney Downs and Enfield Town / Cheshunt (via Seven Sisters) after 10.30pm on Monday, and after 10.45pm on Tuesday, Wednesday and Thursday. Rail replacement buses will be running.
There are plenty of works disrupting rail journeys across the country this Easter weekend:
London Fenchurch Street will be closed, with trains to south Essex running to nearby Liverpool Street instead.
Also in the capital, some lines through Wimbledon – on the main line southwest from Waterloo to Guildford, Portsmouth, Southampton and Salisbury – will be closed from Good Friday to Easter Monday.
South Western Railways services will be “altered, diverted or cancelled”.
Airline passengers heading to and from Gatwick will face problems on Good Friday and Easter Saturday, when there will be no Gatwick Express services. Travellers can use the line from London Bridge instead.
On the East Midlands network, trains from London St Pancras will not call at Derby. The Thameslink line will also be disconnected at London St Pancras.
If you're driving on the M25, there has been a three-car collision in lane four between junctions 16 and 17. Traffic is moving slowly.
