The councillor husband of turncoat MP Dr Lisa Cameron has quit the SNP less than two weeks after she defected to the Conservatives. 

Mark Horsham, who had been the SNP group’s business manager on Labour-led South Lanarkshire Council, is now sitting as an Independent.

The move leaves the SNP without any councillors in his Clydesdale South ward.

Mr Horsham, who was first elected in 2017, stepped back from his duties on October 12 to spend time with his family and reflect on his role after his wife defected.

READ MORE: Husband of Tory defector Lisa Cameron 'steps back' as SNP councillor

It came hours after Dr Cameron, the MP for East Kilbride, Strathaven and Lesmahagow since 2015,. crossed the aisle and became Scotland’s seventh Tory MP. 

She faced deselection by local party members after being challenged by SNP HQ staffer Greg Costello, who subsequently became the party’s new general election candidate.

She said the SNP’s Westminster group had a “toxic” culture that failed to tackle bullying and failed to support its MPs.

Quoted in the Daily Record, a spokesperson for the SNP South Lanarkshire group said: “After six positive and successful years of working together as part of the SNP South Lanarkshire team, it is regretful to see Mark take this decision for reasons unconnected to his relationship with the Group.

"We wish him very well and hope that we can continue to work together in the best interests of people across South Lanarkshire.”

Dr Cameron was cheered by her fellow Tories last week as she sat between former PM Theresa May and Scottish leader Douglas Ross at PMQs last week.

She has since complained of being "exhausted by nationalism".