The Rail Wagon Association Limited (RWA) is a trade association, incorporated as a Private Company Limited by Guarantee, representing the interests of companies involved in rail freight wagons based in the UK.  This includes wagon owners, keepers, users, designers, manufacturers, hirers, ECMs, consultants, maintainers and operators.

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RWA facilitates the sharing of information, the discussion of relevant engineering and safety issues and developing appropriate responses.  RWA does not have any manufacturing, services, or supply chain operations.