The capacity of some trains to and from Helensburgh will be cut when the Queen Street High Level tunnel in Glasgow reopens in August.

During the tunnel works, almost every train on the Helensburgh Central-Edinburgh route has been running with six carriages to accommodate passengers switching from the Glasgow-Edinburgh via Falkirk High route, which has been affected by the closure of the tunnel.

But ScotRail has announced that when the tunnel re-opens on August 8, six of the trains which serve the Helensburgh line will be taken out of service for refurbishment, resulting in carriages being moved around "to best suit customer demand".

The times of trains on the route will remain broadly the same as at present, though the stopping pattern of the service will change east of Glasgow city centre.

A ScotRail Alliance spokeswoman said: “We are keeping the best bits of the Queen Street tunnel timetable as customer feedback has been positive, and we’ve been able to provide a much more reliable service.

“Nevertheless, we’re encouraging customers - particularly those who travel beyond Glasgow city centre – to check their journeys online or via the ScotRail app, selecting a date from August 8.”

Through the day, Helensburgh Central trains will call in both directions at Craigendoran, Cardross, Dalreoch, Dumbarton Central, Dumbarton East, Dalmuir, Hyndland, Partick, Charing Cross, Glasgow Queen Street, High Street, Garrowhill, Easterhouse, Blairhill, Coatbridge Sunnyside, Coatdyke, Airdrie, Drumgelloch, Bathgate, Livingston North, Uphall, Edinburgh Park, and Haymarket.

In the evening, Helensburgh services will also call at Caldercruix, Blackridge and Armadale and will NOT stop at Bellgrove, Carntyne, Shettleston, Garrowhill, Easterhouse, Blairhill.

Those stations will instead be served in the evenings by trains between Airdrie and Balloch.