Andy Coulson arrives to be quizzed by police in Scotland

David Cameron's former communications chief Andy Coulson has arrived at a Scottish police station to be questioned on suspicion of committing perjury during the trial of former MSP Tommy Sheridan.

The 44-year-old was detained in London this morning by officers from Strathclyde Police.

He arrived at Govan police station in Glasgow just before 3.30pm.

Police have 12 hours to question Mr Coulson before applying for a further 12-hour period if it is deemed necessary.