I don't want to go too off-topic, but thanks for bringing this up actually! There was a timetable for an open-top service between South Shields and Seaburn but for some reason must have been taken down. I've put it back online. It's Economic service 22 - which was running during the summer of 1997. Perhaps this had been numbered the 555 at some point?
http://northeastbuses.co.uk/forum/showth...hp?tid=144&pid=1478#pid1478
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RE: Go North East