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Each rail company has been hit by different levels of disruption, so LondonWorld rounded up what services the operators are running and when the last trains are leaving London.

Train services across London have been crippled after rail workers across the country staged a mass walk out for the fourth time this summer.

It is estimated 40,000 rail workers across the country will strike today (July 27), in a dispute over pay with Network Rail.

Network Rail staff - who run logistics and signalling across the UK train network - as well as employees at 14 different train companies are all striking today.

The industrial action is being organised the RMT Union, led by firebrand general secretary Mick Lynch.

He said: “We are at a real crossroads, with these ­anti-union proposals coming on the back of the misery caused by the cost of living crisis.

“It’s time for workers across the economy, whether you’re a member of a union or not, to take a stand, take action, before it’s too late.”

Network Rail said only around 20% of services would be running today, and urged passengers to only travel if it was absolutely necessary.

On most lines, there will be no services after 6.30pm - and the last train from King’s Cross to Edinburgh is running at 2pm.

There will be no Gatwick Express, however two trains and hour will be running from London Bridge, and the last train to Stansted is at 5.30pm.

Network Rail said that services would continue to be disrupted from tomorrow.

Each rail company has been hit by different levels of disruption, so we’ve rounded up what services the operators say are running.

Two trains per hour will run between London Victoria and Brighton, calling at London Victoria, Clapham Junction, East Croydon, Gatwick Airport and Brighton only.

The last train will leave London at 5.50pm.

Two trains per hour will run between London Bridge and Brighton, calling at London Bridge, East Croydon, Gatwick Airport, Three Bridges, Balcombe, Hayward’s Heath, Wivelsfield, Burgess Hill, Hassocks, Preston Park and Brighton only.

The last train will leave London at 5.35pm.

London Bridge and Gatwick Airport

Two trains per hour will run between London Bridge and Gatwick Airport, calling at London Bridge, Norwood Junction, East Croydon, Redhill, Earlswood, Salfords, Horley and Gatwick Airport only.

The last train will leave London at 6.05pm.

London Bridge and Three Bridges

Two trains per hour will run between London Bridge and Three Bridges, calling at London Bridge, Norwood Junction, East Croydon, Coulsdon South, Merstham, Redhill, Horley, Gatwick Airport and Three Bridges only.

The last train will leave London at 6.05pm.

St Pancras International and Bedford

Two trains per hour will run between St Pancras International and Bedford, calling at St Pancras International, West Hampstead Thameslink, St Albans City, Harpenden, Luton Airport Parkway, Luton, Leagrave, Harlington, Flitwick and Bedford only.

The last train will leave London at 5.49pm.

St Pancras International and Luton

Two trains per hour will run between St Pancras International and Luton, calling at St Pancras International, Kentish Town, West Hampstead Thameslink, Cricklewood, Hendon, Mill Hill Broadway, Elstree & Borehamwood, Radlett, St Albans City, Harpenden, Luton Airport Parkway, Luton.

The last train will leave London at 5.49pm.

Two trains per hour will run between London Victoria and Sutton, calling at London Victoria, Clapham Junction, Balham, Mitcham Eastfields, Mitcham Junction, Hackbridge, Carshalton, and Sutton only.

The last train will leave London at 5.30pm.

London Victoria and Epsom Downs via Selhurst

Two trains per hour will run between London Victoria and Epsom Downs, calling at London Victoria, Battersea Park, Clapham Junction, Wandsworth Common, Balham, Streatham Common, Norbury, Thornton Heath, Selhurst, West Croydon, Waddon, Wallington, Carshalton Beeches, Sutton, Belmont, Banstead and Epsom Downs only.

The last train will leave London at 5.11pm.

London Victoria and West Croydon via Crystal Palace

Two trains per hour will run between London Victoria and West Croydon, calling at London Victoria, Battersea Park, Clapham Junction, Balham, Streatham Hill, West Norwood, Gipsy Hill, Crystal Palace, Norwood Junction and West Croydon only.

The last train will leave London at 5.06pm.

London Bridge and Tattenham Corner

Two trains per hour will run between London Bridge and Tattenham Corner, calling at London Bridge, East Croydon, South Croydon, Purley Oaks, Reedham, Coulsdon Town, Woodmansterne, Chipstead, Kingswood, Tadworth and Tattenham Corner only.

The last train will leave London at 6.02pm.

King’s Cross and Ely

One train per hour will run between King’s Cross and Ely, calling at King’s Cross, Finsbury Park, Potters Bar, Hatfield, Welwyn Garden City, Welwyn North, Knebworth, Stevenage, Hitchin, Letchworth Garden City, Baldock, Ashwell & Morden, Royston, Meldreth, Shepreth, Foxton, Cambridge, Cambridge North, Waterbeach, Ely only.

The last direct train will leave London at 3.27pm, however you will be able to get to Ely by changing at Stevenage and Cambridge on the 4.05 train.

King’s Cross and Cambridge

One train per hour will run between King’s Cross and Cambridge, calling at King’s Cross, Finsbury Park, Stevenage, Hitchin, Letchworth Garden City, Baldock, Ashwell & Morden, Royston and Cambridge only.

The last train will leave London at 5.32pm.

King’s Cross and Peterborough

Two trains per hour will run between King’s Cross and Peterborough, calling at King’s Cross, Finsbury Park, Stevenage, Hitchin, Arlesey, Biggleswade, Sandy, St Neots, Huntingdon and Peterborough only.

The last train will leave London at 5.16pm.

King’s Cross and Welwyn Garden City

Two trains per hour will run between King’s Cross and Welwyn Garden City, calling at King’s Cross, Finsbury Park, Harringay, Hornsey, Alexandra Palace, New Southgate, Oakleigh Park, New Barnet, Hadley Wood, Potters Bar, Brookmans Park, Welham Green, Hatfield and Welwyn Garden City only.

The last train will leave London at 6.20pm.

King’s Cross and Stevenage via Hertford North

Two trains per hour will run between King’s Cross and Stevenage, calling at King’s Cross, Finsbury Park, Harringay, Hornsey, Alexandra Palace, Bowes Park, Palmers Green, Winchmore Hill, Grange Park, Enfield Chase, Gordon Hill, Crews Hill, Cuffley, Bayford, Hertford North, Watton-at-Stone and Stevenage only.

The last train will leave London at 5.51pm.

Gatwick Express services will not run, two trains per hour will run between London Bridge and Gatwick Airport. Trains will stop running around 6pm.

Southeastern says there will be a limited service running on the rail network and some routes will be closed. Only 44 out of 180 stations will be open.

No rail replacement buses will serve stations which are closed, except where pre-planned engineering work is taking place.

There will be no services to or from London Victoria or Charing Cross.

The last trains from London will be earlier:

There will be one train per hour in both directions between London Marylebone and each of Aylesbury via High Wycombe; Banbury; and Oxford Parkway.

c2c is running two trains per hour in each direction between London Fenchurch Street and Shoeburyness via Laindon, and the same frequency between London Fenchurch Street and Pitsea via Rainham. No trains will run via Ockendon or Chafford Hundred.

Most Greater Anglia routes are cancelled, however one train per hour will run from Liverpool Street to Cambridge, Colchester and Norwich.

Two trains per hour will run to Stansted Airport and Southend Victoria.

Last trains from Liverpool Street to:

A “severely limited service” is running today, and only on some routes.

This includes just four trains per hour between London Waterloo and both Windsor and Woking, and two per hour between London Waterloo and both Basingstoke and Southampton, in each direction.

Four trains per hour will be running from London Waterloo via Clapham Junction to Hounslow, Staines and Windsor & Eton Riverside.

Trains will run every half an hour instead of every 15 minutes normally to Heathrow Airport.

The last train Paddington to Heathrow will be at 6.10pm.

There will be no Heathrow Express on Saturday during the strike action.

The Piccadilly line is running to Heathrow Airport as normal.

There are train strikes on:

There is also Tube strike organised by the RMT Union, which is due to be held on Friday August 19.