Ok turns out..
The clutch slip was a siezed clutch arm (I think) Iv lubed it up and took the SDi's out and I dont have anymore clutch slip no matter what I do, I cant get it to slip, which is a good thing..
Headgasket failure.. I carried on running despite me thinking the head gasket had gone.. I hadnt checked my coolant level for about 2 weeks so I thought id see how much it needed.. Andd.... it was bang on max still
Turns out it was a leaking coolant hose!
FAIL.
Cant believe it, theres been nothing wrong with it the whole time
Anyway the drivebelt was squeeling when I first started it in the mornings so iv got a new belt ready to put, il have that on when I get a spare 5 minutes!
So all is good at the minute!