Green’s Dictionary of Slang

Stockton (on Tees) n.

[rhy. sl.; ult. English city]

cheese.

[Scot]Eve. Teleg. (Dundee) 3 Aug. 4/1: He says the ‘Stockton’ (cheese) is so ‘Wilkie’ (hard) that he cannot get his ‘Hampsteads’ (teeth) into it.