You can get these rubber lined p-clips from Beal Uk Ltd:
http://www.beal.org.uk/hoses-tubing-...prod_1553.html
Only £8.80 for 50, much cheaper than CBS, and excellent for the job. IVA man always has a close look along the tranny tunnel and it always goes down well when he sees these plus there is enough to use along the rest of the car.
AndyH