Video taken on December 29, 2016, shows Alexander MacKinnon calling out racist abuse directed at Sanaa Shahid and her four-year-old son on a train from London to Glasgow.
In the footage, filmed by Shahid, who works as a legal council in Glasgow, MacKinnon can be heard saying “that stupid cow doesn’t belong in this country,” into his phone.
The incident "allegedly started" with MacKinnon shouting at Shahid's son, telling him to be quiet, and when asked to lower his voice he began asking where Shahid came from, why she did not go back there and telling her she did not belong in first class.
Later in the video, a train official can be seen approaching MacKinnon telling him that he needs to "get off the train".
MacKinnon, a 47-year-old solicitor from Glasgow, was fined £1,154 at Carlisle Magistrates Court on February 2.