Quad bike stolen from vehicle security specialists' trade stand at Great Yorkshire Show

One of the quads was a demonstration vehicle on display at the Datatool stand at Harrogate Showground. The other was part of agricultural machinery suppliers Carrs Billington's stand.

Datatool specialises in providing electronic tracking and security devices for motorcycles and farm ATVs, and boasts a 96 per cent theft recovery rate.

They are official security suppliers to brands including Honda and Yamaha.

Quads and other ATVs have proved popular among thieves who target isolated farms and rural properties in recent years.