Complex sentence: By 1967 BMH Jaguar's Sunbeam, Britain's only manufacturer of trolleybuses, offered three models: a 2-axle design for single deck vehicles, another for double-deck vehicles and a 3-axle double-deck chassis.
Split into simpler sentences: By 1967 BMH Jaguar's Sunbeam was Britain's only manufacturer of trolleybuses. It offered three models: a 2-axle design for single deck vehicles, another for double-deck vehicles and a 3-axle double-deck chassis.