For a sound closest to Geordie I would go to Stockholm-equipped SG Junior tuned to D standard. I used to interchange it with a alnico Nailbomb in an Explorer and an alnico Warpig in an SG and out of the three the Stockholm SG was easily the punkest and had the nicest top end
If you get one of these you will need to fully shield your guitar and be careful to keep your body between the pickup and the amps
Knowing that Geordie usually uses P90s, I'd thought about them but 2 things put me off:
1 - do they have enough grunt for heavy rhythm playing?
2 - are they too noisy to be used for high gain playing?
I've got to be honest, I've never used P90s but I am intrigued by them. How do you find yours?