Complex sentence: However, the main operator, Arriva Cymru, decided to terminate their service in Synod Inn, after the diversion to New Quay, whilst the southern section of route was operated by Richards Bros., a Cardigan-based independent operator.
Split into simpler sentences: However, the main operator, Arriva Cymru, decided to terminate their service in Synod Inn, after the diversion to New Quay. The southern section of route was then operated by Richards Bros, a Cardigan-based independent operator.