There's a modular group a Division of the NMRA (American) that meets regularly in Barry.
Conservative Club Barry Cadoxton your contact is : Norman Carey 029 2056 4505. As I said this is American
but you will enjoy the experiance, I'm told their layout is excellent. BTW with modular each member builds one or two sections which are a std. length they are the joined with corner pieces. do a search on Google for modular layouts and you'll get the ideal.