Complex sentence: The sole east end bay to the north of the line is however maintained for use for eastbound passenger services starting at Newbury and is still referred to locally as "the Compton bay" because of its original purpose on the DN&SR.
Split into simpler sentences: The sole east end bay on the north side of the line is maintained for use for eastbound passenger services starting at Newbury. Locally it is still called "the Compton bay" because of its original purpose on the DN&SR.