Enjoy todays fresh TCS Chandlery discount: Sign up to TCS Chandlery For £5 Off. Save 50% off with our 5 TCS Chandlery discounts as of 2018. Welcome to TCS Chandlery. TCS is one of the major UK one stop marine chandlery businesses. They have three well stocked retail shops in Essex, based in Grays, Southend-on-sea and Essex Marina they have everything for the boating enthusiast, and an extensive national and international mail order service providing for all your needs.