ASLEF has called another five days of 24-hour strikes on LNER from 5 to 9 February, in what could be the first direct challenge to the new minimum service levels law, which requires a set percentage of staff to continue working during strikes. ASLEF has already called rolling strikes for a week from 30 January, which will affect most operators in England for one day. As well as the new LNER walkouts in early February, ASLEF drivers will also refuse to work any non-contractual overtime from 7 to 10 February.