Complex sentence: Like all the other stations on the branch, Garston is now a simple unstaffed halt, but at the time of its opening in 1966 this was a welcome addition to a branch which was otherwise being heavily rationalised.
Split into simpler sentences: Like all the other stations on the branch, Garston is an unstaffed halt. At opening in 1966 it was a welcome addition to a branch which was otherwise being heavily rationalised.