Ian Gareth-Jones biography Ian Gareth-Jones is a London-based British actor. He is a regular actor on the West End stages and has performed on several international tours. Ian was also the Resident Director on Knights of the Rose (Arts Theatre) and South Pacific (Kilworth House). He is currently working in the famous West End musical Mary Poppins. Training: He received his professional training from the Arts Educational Schools London. Theatre: His theatre credits include Guys and Dolls (Marigny Theatre, Paris), Mary Poppins (West End and UK tour), The Producers (Royal Exchange), Mamma Mia!, Oklahoma, Chicago, Seven Brides for Seven Brothers and Scrooge (UK tour), Mrs. Henderson Presents (Noël Coward and West End), Oliver! (Leicester Curve), Billy Elliot (Victoria Palace), Guys and Dolls, My Fair Lady, Anything Goes and Pirates of Penzance (Kilworth House), and Calamity Jane (Shaftesbury Theatre).