Transport for London made an eleventh-hour bid to prevent Underground strikes last night, by urging the RMT to suspend the action and restart peace talks.

But industrial action over pay and working hours is set to continue with the first walkouts by track access controllers due tomorrow, which TfL is warning will mean ‘limited’ services.

Most Underground lines are expected to have ‘little to no service’ from Monday to Thursday as other groups of staff strike. They include signallers on Tuesday and Thursday, and Chiltern Railways Aylesbury services will also be cancelled between Great Missenden and London Marylebone on those days.

Docklands Light Railway services will also not run on Tuesday and Thursday because of a separate strike.

Other TfL services like the Elizabeth Line, London Overground and trams are not directly affected, but passengers are being warned that these services will be very crowded and that there could be some changes to their timetables.

The RMT’s main demand is a reduction in the working week from 35 to 32 hours in order to ‘manage fatigue’, which TfL said last night that it would be ‘impractical and absolutely unaffordable, with costs that could run into the hundreds of millions of pounds’

TfL chief operating officer Claire Mann has urged the RMT to call off the strikes and arrange a new ballot about a 3.4 per cent pay offer, which had only been made after the previous ballot had started.

The last round of negotiations on Wednesday ended in failure.

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