Commuters should brace themselves for another strike after rail union RMT has confirmed its January tube walk out will go ahead.
The Rail, Maritime and Transport Workers (RMT) union balloted in favour of taking industrial action in December.
RMT's National Executive Committee made the decision to take the course of action.
Mick Cash, RMT's general secretary, said: "RMT will not stand by while safety is compromised on London Underground off the back of cash-led cuts to staffing levels that the union has warned would have a serious, lasting and corrosive impact for staff and passengers alike.
"That is why our members are taking this action.
"RMT members on the London Underground stations see day in and day out the toxic impact of the job cuts programme and they are reporting back that it is horrific."
Here is everything passengers need to know about the upcoming strikes so you can plan your day accordingly.
When will the strikes take place?
Rail staff members have been told not to book on any shifts between 6pm on Sunday January 8 and 5.59pm on Monday January 9.
Therefore, the strike will last a day from 6pm on Sunday.
Where will they take place?
The strikes will go ahead at all London Underground stations.
Why are they happening?
The dispute is over tube station staffing and safety, after 900 front line workers and the closure of ticket offices took place last year.
RMT said the cuts have left safety on a knife edge with the terror incident at North Greenwich - where a man was arrested for leaving a parcel on the Jubilee line - throwing the spotlight on dangers which are being worsened by the cuts process.
The cuts have been made as part of London Underground's "Fit for the Future" reorganisation that saw the closure of ticket offices on the tube network.
How many balloted for the strike?
More than 3,000 members of RMT pushed for strike action. A total of 85% voted for strike action and 94% for action short of a strike in the ballot.
Commuters at Victoria during tube strikes in December
Is there still southern rail strikes scheduled for the same dates?
Planned Southern Rail strikes, which were due to go ahead from Monday as well, have now been halved to three days from six.
The drivers' union said strikes would now be held on January 10, 11 and 13.
General secretary of union Aslef, Mick Whelan, said the move did not mean the union was rolling back and warned of further strikes.
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