Complex sentence: His small size made him ideal for a number of roles-he was able to get inside a number of small, cramped costumes and even doubled for Katy Manning and Louise Jameson (wearing their costumes on both occasions!).
Split into simpler sentences: His small size made him ideal for a number of roles. He was able to get inside a number of small, cramped costumes and even doubled for Katy Manning and Louise Jameson (wearing their costumes on both occasions!).