Disruption is continuing today over a dispute with train drivers in Scotland.

ScotRail cancelled half of its services on Sunday to and from Helensburgh instead of maintaining its usual 30-minute timetable.

The rail operator said they were "having to make alterations" and disruption was expected in many parts of the country. They urged travellers to check their journey before buying tickets.

On the the JourneyCheck website, there were 79 train cancellations listed for Monday, July 8, with 13 of them on the Helensburgh to Edinburgh route.

READ MORE: ScotRail cancels half of all its Helensburgh trains today

ScotRail said they had fewer train drivers than usual making themselves available to work overtime or on "rest days".

Train drivers' union ASLEF announced in June it was considering balloting members for industrial action in a dispute over pay.

On Sunday a ScotRail spokesperson: "Following a warning on June 24 from drivers’ trade union ASLEF that it may ballot for industrial action over pay, there has been an ongoing impact of fewer train drivers than normal being available for overtime or rest day working, as is their contractual right, resulting in service disruption.

"On Friday (July 5), ASLEF informed ScotRail that it would recommend a ballot of its members to its executive committee over pay."

Other routes impacted included the Balloch-Motherwell, Milngavie-Larkhall and Glasgow Central-Motherwell lines.