The old gel filled telecom direct bury standard drop / lead in cable. 
Wire colors Red/Black/Blue/White 

Does anyone know what its officially called or if it has any official specifications? 

I managed to get 100mbits ethernet running over about 50 metres of it between two buildings at the weekend without any packet loss, but am keen to know if its even twisted pair? 
I was short on length so didnt want to strip any more back. Hoping i got the right colors if they are indeed twisted in pairs, but if not, i'll go back and re-wire it.