MacKenzie, Campbell

Dr. Spike Briggs is a consultant in intensive care medicine and anesthesia. He is a medical advisor/fleet medical officer to the Challenge Business, which runs ocean yacht races across the Atlantic and around the world.

Dr. Campbell Mackenzie is a retired Surgeon Commander, having served in the Royal Navy and Royal Naval Reserve. He is an instructor for the Royal Yachting Association First Aid course and an advisor on marine medicine for the British coast guard.