Got my car a few months ago, love it so far but got a strange issue. It's a 1.8 TDCI Ford Focus Zetec (08)

It only seems to happen when the car is cold, and when I'm on full right lock and it is only occasionly.. which is a bugger to diagnose!! When I'm pulling out of a parking space in full right lock, and gently press the accelerator or if I'm already on it the car seems to loose power and make a very strange and quite loud metal to metal grinding noise until my instict to let the lock off kicks in and it stops..

Sounds like gearbox or possibly driveshaft to me, but then again I work in IT not cars!

I've got it booked in at the garage on monday coming, but the guys at ford seemed very confused as to what it could be with the description I gave!