West Midlands Railway (WMR) has urged passengers to plan ahead as two days of industrial action are set to affect services across the network next week.

A reduced timetable will be in operation on Friday, July 31, and Saturday, August 1, due to strike action by members of the TSSA trade union.

On Friday, only a limited number of services will run, with some routes having no trains at all.

No WMR trains will operate after 7pm, with the final services departing by around 5.30pm.

On Saturday, services will start later than normal, with the first trains beginning from 7am.

A reduced timetable will remain in place throughout the day and some routes will not operate.

Jonny Wiseman, customer experience director at WMR, said: "It is disappointing that TSSA has called further strike action which is set to disrupt travel for our customers.

"We apologise for the inconvenience this will cause and urge TSSA to continue talks so we can reach a resolution to this dispute.

"If the strike action does go ahead, we will be running a reduced timetable on both dates.

"Customers are advised to check before they travel by visiting journey planners and our website."

Routes operating a limited service on both strike days include:

• Cross City Line (Lichfield Trent Valley to Redditch/Bromsgrove via Birmingham New Street) – four trains per hour
• Wolverhampton to Walsall via Birmingham New Street – two trains per hour
• Rugeley Trent Valley to Birmingham International via Birmingham New Street – two trains per hour

However, no trains will run on a number of routes, including all services via Birmingham Snow Hill, the Camp Hill Line, Nuneaton to Leamington Spa, Birmingham New Street to Hereford, and Birmingham New Street to Shrewsbury.

WMR has also warned that some disruption may continue into the morning of Sunday, August 2, due to the displacement of trains.

Passengers holding tickets for July 31 or August 1 will be able to use them on July 29, July 30, August 2 or August 3 instead.

Train times will be available through journey planners ahead of the strike dates.