Complex sentence: Tommy is the son of Terry (Nigel Pivaro) and Lisa Duckworth (Caroline Milmoe) since his first appearance in 1992 he has had few storylines but after his return in 2011 he became more of a central character.
Split into simpler sentences: Tommy is the son of Terry (Nigel Pivaro) and Lisa Duckworth (Caroline Milmoe). Since his first appearance in 1992, he had few storylines; but after his return in 2011, he became more of a central character.