The 230 used to be service 40.
originally service 230 was split, the 230 used to go from Newcastle to Hartlepool via Sunderland on a 30 minute freq and then their was a 230 Sunderland to Middlesbrough 30 minute freq with Sunderland to Hartlepool on a 15 minute freq. later on in life the 230 was renumbered 130 Newcastle to Sunderland and when the Metro was introduced the 130 terminated at Heworth Metro. But the 230 was still kept between Sunderland and Hartlepool.
RE: Go North East Service Suggestions