LONDON Underground drivers “remain solid” as they launched fresh strikes in a row over Night Tube rosters, which could carry on until June, their union said today.

Members of the Rail, Maritime and Transport (RMT) union on the Central and Victoria lines walked out on Friday and Saturday evenings in their ongoing dispute over unfair shift patterns.

Weekend strikes are planned to be held until June unless the dispute is resolved.

The union has said working practices are being imposed on drivers which would “rip apart” their work/life balance, which LU denies.

RMT general secretary Mick Lynch said: “Our members have sent out the clearest possible signal that this issue isn’t going away.

“With action scheduled for the next six months there is only one way forward and that’s for serious and genuine talks aimed at a negotiated settlement.”

LU said new rosters include assurances that there will be no job cuts, the option of permanent work for those on part-time contracts, and only scheduling up to four night-shift weekends per year.