As industrial action by ASLEF union members continues, passengers are being told to check their journeys in advance, as more disruption is likely this weekend.
Some railway staff have been refusing to work overtime as part of an ongoing row over pay and working conditions since Monday, but there's now warnings that there could be further problems tomorrow (Saturday).
One train per hour has been running between Shanklin and Ryde on Island Line this week - SouthWestern Railway says this is likely to be the case tomorrow too.
Journeys can be checked on the operator's website. It's expected services will be back to normal on Sunday.