(19 Oct 2020, 9:03 pm)Malarkey wrote Does anyone know which years Expresslink and Northern Superliner were introduced as I am working on a photographic timeline, some of it I have worked out from looking at the Bygone Era Timeline.

Decided to do this follow contact from the Go-Ahead Group Communications Team for use of a few of my photos for promotional purposes which have also been used by Go North East and Northern Echo in recent weeks.

Can't give you exact dates, but pretty sure the ExpressLink services came first and was just before or just after de-reg.
Assuming the uprated Cxxx OCN Metrobuses were painted new, there's a decent enough starting point. 
There were some incarnations prior, such as Tyne Link, but they were National ops, rather than Go-Ahead. 

Going forwards, I seem to think Superliner came about after the strikes in 91 and when operations were all split up, with that the name given to the County Durham based express network.
I'd give that brand around 5 or 6 years max before disappearing along with WearExpress etc