Transport for London (TfL) has warned Londoners that there may be a strike on the Circle and Hammersmith & City lines today and tomorrow.
Some drivers on these two lines who are RMT union members are currently planning to strike from 21:30 on Thursday 15 September for 24 hours, TfL said. which will see some drivers not book on for any shift that starts within this time.
London Underground (LU) is currently in discussion with the RMT union to try to resolve the dispute, which is "about a number of local-level issues at two of the three depots covering the lines".
If the strike goes ahead, there will be no Hammersmith & City Line service and a very limited service on the Circle line from around 21:00 on Thursday and all day Friday 16 September.
TfL also warned that Circle Line services will be much less frequent than usual and extremely busy, especially at peak times, and may be subject to short notice cancellations
"We are speaking to the RMT union to try to resolve the issues without disruption to our customers," said Steve White, operations director for LU.
"But if the strike does go ahead, customers are advised to check our real-time travel information. All other Tube lines and other TfL services will be operating as normal and we’ll be making sure that everyone has the information they need to re-plan their journeys if necessary.”