Well guys, having been under the car and re-acquainted myself with ELSA I am now wondering who in their right mind in Germany decided the est place to mount the sensor was on the TOP of the gearbox!?
£60 for a part, I suspect it will be a lot more in labour as lowering the subframe isn't something I want to try on the drive with a trolley jack and stands
Will call around tomorrow and hope that the actual labour involved isn't as bad as it sounds! Thanks for the help thus far