Every time I hear Martyn (yes, it is Martyn with a 'y', according to the Radio Times cast list) do his sneering stuff, I grind my teeth.
I don't care how annoying/whingey Kathy (with a 'K') is - I just cannot believe that any grown-up person could possibly listen to his sneering shit without either throwing his humungous bar bill in his face, or just telling him to fuck off.