Thorne and Derrick UK is a company that manufactures and supplies electrical power cable accessories and equipment including cable joints, terminations, glands, cleats, feeder pillars, fuse links, and arc flash protection. They provide products for 11kV, 33kV, and other voltage cables. Their website is www.cablejoints.co.uk and they can be contacted by phone or fax at several phone numbers listed on the document.