Hey there!
Thanks for the advice - I've looked up Celtic Rhythm and they are actually the band that the H2B saw that made him want Irish dancers in the first place! (Some drunken night in the Arlington where they seem to perform regularly!). I've left a message with them so hopefully they'll be available, fingers crossed!
I tried googling Mystic Force but I've had no luck! I'm getting loads of power rangers links and plenty of info on mystic ireland but no dance troupe! I know some of these groups take a while to get on the web! Thanks!