Yorkshire Marine Containers Ltd (YMCL) is a wholly owned subsidiary of Sea Containers Ltd and has been at the forefront of ISO container design, development and manufacture for over 30 years.

YMCL's operations in East Yorkshire, England are carried out in two factories housing five production lines.  It employs approximately 200 employees. Belprin Works in Beverley, which has been used for container manufacture since 1976, together with Catfoss (1979).  The factories are capable of producing up to the equivalent of 200-230 TEU (twenty foot equivalent container units) of dry freight specials per week including tanks, flatracks, swapbodies, opentops, waste containers, defence containers, offshore containers, modular buildings and specials.