Passengers across London are being advised to check before travel this June as Tube drivers represented by the RMT are set to stage 24-hour strikes from 12:01 am to 11:59 pm on Tuesday, 2 June and Thursday, 4 June in a dispute over proposed changes to working patterns on the London Underground.

The union’s action centres on plans for a four-day working arrangement for drivers, which the RMT argues raises concerns around rostering and conditions.

Transport for London has insisted the scheme would be entirely voluntary, but drivers are pressing ahead with industrial action amid calls for further negotiations.

Transport for London expects most Tube lines to continue operating during the strikes. However, there will be no service on the Circle and Piccadilly lines, the Metropolitan line between Baker Street and Aldgate, or the Central line between White City and Liverpool Street.

Limited services are expected before 6:30 am, with passengers advised to complete journeys by 9 pm. Normal services are due to operate on 1, 3 and 5 June.

Despite Transport for London accusing the union of causing unnecessary disruption, the transport body acknowledged that many services continued to operate during the previous round of strikes in April, when around half of the scheduled services ran. Passenger demand also remained relatively high, reaching 94% of normal levels by Friday, 24 April, the final day of action.

“We are disappointed to see the RMT continue with this industrial action. We still believe that the points they have raised can be worked out in time, through more detailed discussions and we are continuing to talk to the union’s representatives to find a way to avoid disruption to London. “

Claire Mann, Chief Operating Officer at TfL.