Sounds like Tinker Taylor Soldier Spy to me.
Help please - I remember a spy thriller that was a real head bender, they all worked out of one office but they were possibly all double agents - it went on for weeks until the finale of the place being blowed up. I reckon it was early 80's.
Sounds like Tinker Taylor Soldier Spy to me.
Mmm - not sure, I think Tinker tailor was a John Le Carre thing - this definitely was not - thanks anyway