Travellers are being warned not to travel on Monday ahead of planned strike action by London Underground workers.

Transport for London (TfL) is advising commuters that there will be a severely reduced service across the Tube network from 6pm on Sunday, January 8, until 6pm on Monday, January 9, if the planned strike by the RMT and Transport Salaried Staffs’ Association (TSSA) unions go ahead.

Talks at the conciliation service Acas between TfL and the unions ended with no resolution being found yesterday, Thursday, January 5, and although further talks are being held today, TfL are warning travellers to be prepared for the industrial action to go ahead.

TSSA general secretary, Manuel Cortes, said: “Our negotiating team remains available for further talks throughout the weekend should they become necessary.

“However, our 24 hour strike action on the Tube remains scheduled to begin at 6pm this Sunday evening.”

The planned strike is part of the ongoing dispute surrounding the closure of ticket offices throughout the London Underground.

TfL have warned that, if the strike goes ahead, travellers should try to complete all journeys by 6pm on Sunday, and say that most Zone 1 stations are likely to be closed for the duration of the action.

National Rail Services will not be affected, but there will be no Underground services from stations including Victoria, King’s Cross, Waterloo, Paddington, Euston, Bank and London Bridge.

Piccadilly services will continue to run between Hammersmith and Heathrow Terminals 1, 2 and 3, but there will be no service to Terminals 4 or 5.

There will be no service at all on the Victoria or Waterloo & City lines, and all other lines will be severely affected with limited service expected in outer London.

The Light Docklands Railway services will still be running, but TfL warn they will be busier than usual and may include changes to services towards Bank, with trains terminating at Shadwell or Tower Gateway.

Roads, buses and rail services are expected to be much busier than usual if the strike goes ahead. TfL says it will be deploying Travel Ambassadors to help customers navigate the city, with 100 extra buses and enhanced river services being brought in.

London Underground’s chief operating officer, Steve Griffiths, said: “We have always committed to reviewing our new staffing model with our trade unions during its first year, and following the review by London TravelWatch we established a joint working group to undertake that review and make any changes necessary.

“It is clear that some more staff for stations are needed. We have started to recruit them and will continue to work with unions to implement the recommendations made in the review. We believe that this will help us to provide a better service for our customers and ensure that they continue to feel safe, secure and able to access the right help while using our network.

“We encourage the trade unions to continue working with us in order to resolve this dispute and deliver the customer service our customers expect.”