Ok good news folks, and absolute fantastic service from the Auto Electrics in Aberdeen.
The manager called me up and was susprised by the Email I sent this morning, which included photos of the barrel, and I also mentioned that I sprayed a little WD40 inside. He fully agreed this shouldn't have happened, and had already contacted Witter who are now sending him a full kit, which includes the bumper bar, wiring etc.
He is just going to send me the full kit once it arrives, then send it to my house address using parcelforce, and I can pick out the brand new Swan Neck and new keys.
Absolute brilliant service, and all the worry has gone
Thanks all to the help on here again.