.........James did it last time for me 
But he's not a member anymore
......
Isn't he? :-? Why?
I assume the twin cam 4 pots are pretty similar across the Vx range. I did my wife's Astra 16v in an hour or so, didn't rush at all. I reckon it could easily be done in half that - didn't do the water pump though. I'm sure you could do it cheaper all in all - including time off the road from taxiing - than by paying someone else.
had to sort himself out
Nah thats not the reason.......the admins kicked him off OOF coz he sold his omega and bought one of those disco thingies.......

Only jesting......James had his reasons for leaving OOF.......
Seriously if I take it too the garage.....they'll prob take an hour to change it with the waterpump........i'll take all day.......by the time ive double checked everything.........so money wise........im probably better off letting the garage do it :-/