The pub's in No man Land are 'Jack Straws Castle which is sadly closed down and turned into luxury apartments, although Spaniard's Inn is nearby and still open. In Chalk Farm is the Red Bull. I cannot find any pub with that name in the area, the closest is the Bull and Gate in Kentish Town. However, Sheila Hancock says Pinter never went to the pub. So maybe its a fruitless search. No Man's Land (play) - Wikipedia