Try bleeding the slave cylinder with an easi-bleed from Halfords. Every time I bleed my clutch the fluid comes out black and nasty, which won't help with the pedal feel.
At 96K, your clutch is coming towards the end of it's life, if not already past it. I bet your slave has never been bled in that time either.
In summary, a slave bleed is a quick fix for a dodgy pedal feel but if it feels bad again soon after, put some money aside for a new clutch and/or clutch master cylinder. In the meantime, have a look at the top of your clutch pedal around the pivot point for any signs of leaks. If it and the slave are both dry, it's a worn out clutch if a fluid bleed doesn't fix the pedal behaviour.
VAG clutches start to get heavy (compared to new) and vague when worn out.