Acumen's David Martin takes product testing seriously. While testing the company's new HID lighting system and CL10 intelligent chain oiler he travelled 2,500 miles from his headquarters in Hampshire on a trip around the Highlands, up to John O'Groats and back again in under a week. That's further than the distance from London to Cairo! He's Pictured at the top of Scotland with Graham Matcham (RIGHT) from Avon Tyres, who had ridden up from his home on the South coast of England to join Martin.