I've just found a supplier of Braided Cable in Germany the business is called
http://www.textilkabel.de he can supply any colour of cable under the rainbow (and some that aren't) in either two or three core,it is the usual type of PVC cable with a Braided cover but very good quality, my order arrived in two days so is comparable with UK post. Usual disclaimer I don't know the chap from Adam but his service is good.