I do think an initial trial night bus covering the Coast Road on a Friday & Saturday evening (backed by TNE/NECA, Arriva & GNE) would work though using 1x bus (a StreetLite). GNE are already losing money on the last full 1 ex Whitley Bay to MetroCentre with all the dead running back to Percy Main. An N308 would give the service opportunity to carry revenue back towards the Coast, plus the fact that the STACK in Whitley Bay would also minimise losses towards Newcastle to pick up the later journey.

Newcastle Newgate Street - The Gate: 00:25
Whitley Bay - Park Avenue: 01:04

Whitley Bay - The Avenue (For STACK): 01:10
Newcastle - St Mary's Place: 01:44

Newcastle Newgate Street - The Gate: 01:55
Whitley Bay - Park Avenue: 02:34

Newcastle stops:
* Newgate Street - The Gate
* Grainger Street - McDonalds
* Market Street West
* Pilgrim Street
* John Dobson Street - Near City Hall

Then same route as 308 but via High Farm & Battle Hill Drive, and omitting Silverlink slip road