BOAT COVERS, CANOPIES AND MARINE UPHOLSTERY A superior bespoke product every time! Based in the North West of England at Catforth, near Preston, Lancashire, Amtrim Ltd is a specialist manufacturer of boat covers, canopies and marine upholstery. ​ With over 30 years experience as specialist UK Marine Trimmers and boat cover makers you can rest assured that we certainly know how produce a top quality boat cover. ​To maintain a high level of service Amtrim Ltd caters mainly for craft moored on the Lancaster Canal, Leeds & Liverpool Canal and Marinas /Boat yards in the Lancashire, South Lakes and Cheshire areas. Being based near Preston means we are within easy reach of most locations within these areas. Other marine products include all-over boat covers, tonneau covers, half canopies, fishing boat covers, canvas repairs and marine upholstery.