Hi all, first post on here but getting to the bang head on desk stage.

Clutch pedal was going to floor and staying there so changed clutch and slave cylinder

After a few days starts to do the same (pedal works OK but pedal upstroke gets progressively closer to floor (4-5 strokes up down and it would be on floor)

Assume it must be master cylinder so change that

Still doing it! There appears nothing else to replace apart from the lines!

Additional info
The pedal can be pulled up by hooking foot under it and works OK for a few goes then starts to fall again
The action in general is much better now that all has been changed
The fluid has now been changed about 4 times due to a combination of brake discs and clutch parts but it still appears dirty which strikes me as odd?

Any suggestions would be appreciated (I am off out for the evening now so will respond to any questions tomorrow)
regards
SuffolkFox