Muay Thai classes?

I'm 15 and I've experience in Taekwondo but I quit because I lost interest in the classes (No variety, same kicks being taught, little to no sparring)... But lately I've been looking in to Muay Thai and it interests me! It looks like a good way to defend myself and generally looks like good exercise now that the rugby season's over. I was wondering if anyone knew of any classes being taught for my age group, or all ages, around my area which is Killiney in Dublin. I'm not looking for anywhere too far away, preferably some where that I could cycle to and not be wrecked during class or so far as that I'd be too tired to cycle after the class?

All help will be appreciated!