Underground drivers are set to go on strike over terms and conditions.

The union Aslef announced that they will strike in London on Monday, April 8 and Saturday, May 4.

Aslef drivers account for 96 per cent of train drivers in England, Scotland and Wales.

Finn Brennan, the union’s organiser on LU, said the company had failed to give assurances that changes to terms and conditions will not be imposed without agreement.

The rail union Aslef has announced the fresh set of tube strikes

He said: "Despite a previous commitment to withdraw plans for massive changes to drivers’ working conditions, London Underground management has established a full-time team of managers preparing to impose their plans.

"They want drivers to work longer shifts, spending up to 25 per cent more time in the cab, and to remove all current working agreements in the name of flexibility and efficiency.

"Everyone knows what these management buzz words really mean. It’s about getting people to work harder and longer for less."

Aslef drivers have voted by 98 per cent in favour of strikes. They went on strike a year ago in the same dispute.

Earlier this year members of the Rail, Maritime and Transport union (RMT) were due to walk out, however action was called off at the last minute after progress in talks with Transport for London (TfL).