Many thanks for all the prompt replies guys, really appreciate it.
So is it sounding like the master cylinder and/or clutch fluid are the main culprit? Or is it the retaining pin? Because if im honest it "feels" like something has snapped if that makes sense? Im not really an expert though.
Is it ok to drive the car btw? I just wish i got it looked at/tried to resolve the other clutch issues myself sooner :/ Maybe would have prevented this from occuring?
I did actually ask my mechanic (a family freind) to look at the previous pedal issues (i.e. going from notchy,stiff,normal,light) but he never properly resolved it, (i.e. i wanted him to do the known washer fix but he didnt do it as he "couldnt find a fault" - lazy sod). Anyway he said he greased the mechanism instead, but weirdly it creaked more after he'd finished with it! But this was approx a month ago and the creak went away.