The MAT Academy is in Church Village and they have Lewis Long training out of there. I teach jiu-jitsu there twice a week (brown belt) and Lewis teaches Thai, wrestling and MMA. There is also an awesome conditioning coach.
My jiu-jitsu club also have loads of other classes locally... Trefforest, Cardiff, Merthyr and Caerphilly. See www.chrisreesacademy.com for full info... most successful club in Wales :-)