Is it authentic Mexican or Southwestern American “Tex-Mex” Mexican? Last I was over there, they were just beginning to have some variety and moving away from traditional English bland.
To be honest, not being a fan of the stuff, I don’t pay close attention to the differences in that type of food. So, sorry, I don’t know. London has fantastic food now although in the bad old days they had the most wonderful Indian food (and they still do!)