SCOTTISH Tory leader Ruth Davidson has been left red-faced after the key contents of her conference speech were leaked when she forgot to turn her mic off.

Davidson's mic was still live as she rehearsed her address to party faithful – with the nine-minute-long clip also including her discussing the material with spin doctor Eddie Barnes.

Davidson can be heard saying she would rather not talk about the European elections, unaware her words could be heard by the media.

Responding to the leak, First Minister Nicola Sturgeon tweeted: "For some bad jokes, tired lines and ample evidence that the Tories are way out of touch with Scottish opinion on Brexit, here’s a preview of Ruth Davidson’s conference speech (courtesy of the Tories who forgot to switch the mic off during the practice)"

The full clip, published by The Herald, can be listened to below.