Rail strike latest: Find out if your train will run next week

The company accused the Rail Maritime and Transport union of failing to comply with the Trade Union and Labour Relations Act of 1992 in the ballot, which showed a 54% majority in favour of strikes.

The case was set to be heard today but Network Rail (NR) said it would now go ahead at the High Court in London at 10am tomorrow.

The union, which has called four days of action from next Tuesday, the day after the Easter break, said it will strongly defend the legal action.

NR said the alleged inaccuracies and discrepancies impacted on almost 300 votes or potential votes.

Robin Gisby, NR's director of operations and customer services, said: "We believe we have uncovered scores of inaccuracies and discrepancies in the RMT's signallers ballot that, in our view, makes it invalid.

"We want to find a negotiated settlement to this dispute and talks continue but we have a responsibility to the entire country to head off this strike and let people enjoy their Easter break."

NR said the inaccuracies included 11 signal boxes balloted by the RMT that do not exist, with most having been closed for years; 67 locations where the numbers of RMT members balloted exceeded the total number of employees working there; 26 workplaces which were completely missed out, giving RMT members at these locations no opportunity to vote; and 12 locations where there were no operations staff at all, so workers were ineligible to vote.

The company said one of the signal boxes included in the RMT ballot had been burnt down by arsonists a year ago, and added that it had three employees at South Tottenham, where 11 members had been asked to vote, and 24 employees at Crewe, where the RMT invited 33 members to vote.

The company said it is considering its position in relation to a strike by maintenance workers, but added that if it does go ahead it will have almost no affect on services.

Bob Crow, general secretary of the RMT, said: "RMT is putting together an experienced legal team, including some of the most high-profile employment law experts in the country, and we will be mounting the most robust defence possible in the High Court against this attack by Network Rail on our internal democracy.

"This is a scandalous attempt by Network Rail to use the full weight of the anti-union laws to deny our members their basic human right to withdraw their labour and we will fight this assault on our union to the hilt."

Anthony Smith, chief executive of rail customer watchdog Passenger Focus, said: "Passengers are being left in a state of limbo as unions and Network Rail fight it out in court, in the media and at the negotiating table.

"If this strike goes ahead, three-and-a-half million passengers each day are going to be inconvenienced and annoyed. That cannot be in anyone's long-term interest."

Meanwhile, train firms today published outline revised timetables showing which services will run from April 6-9 if the action is not averted.

The earliest services will begin is 7am and the latest they will end is 7pm.

Northern Rail expects to run a reduced service on certain routes from Bradford, Leeds, Huddersfield, Sheffield, Newcastle and Manchester;

Wharfedale Line: Leeds/Bradford Forster Square – Ilkley (4 trains per hour in each direction)

Airedale Line: Leeds/Bradford Forster Square – Skipton (4 trains per hour in each direction)

Leeds – York (1 train per hour in each direction)

Leeds – Doncaster (2 trains per hour in each direction)

Leeds – Huddersfield / Marsden (1 train per hour in each direction)

Sheffield - Doncaster via Rotherham (2 trains per hour in each direction)

Sheffield – Nottingham (1 Northern service per hour in each direction. East Midland Trains will also operate on this route)

East Coast expects to run near normal services from London King's Cross to Leeds, York, Newcastle, Edinburgh and Glasgow.