A police appeal has been launched after a couple were caught in a shocking indecent act on a busy ScotRail train service between Glasgow and Edinburgh.

The incident happened on board the 7pm train from Glasgow Queen Street to Edinburgh Waverley on Saturday, June 8. Shortly after departure, a woman wearing a fur coat was seen performing a sex act on a hoodie-wearing man in full view of other passengers.

British Transport Police say the couple were sitting in the seats nearest the doors at the back of the train. Their behaviour was only interrupted when the train guard approached to carry out checks.

The pair have since been identified, but detectives are now appealing for witnesses who may have seen the incident unfold.

The man is described as white, in his late thirties, of regular build, with a short, scruffy greying beard and facial tattoos.

He was wearing a black baseball cap, black hoodie and jeans, and was carrying a black backpack, reports the Daily Record.

The woman is described as white, in her thirties, of regular build, with blonde hair. She was wearing a dark fur coat and black trousers.

Anyone with information is urged to contact BTP by calling 0800 40 50 40 or texting 61016, quoting reference 554 of 8 June. Information can also be passed anonymously to Crimestoppers on 0800 555 111.