Sorry Sam - not had time to log in and read the board for a few days so I missed seeing this before I saw you at the w/e.
If you only need a small amount (a few feet) I've got some in stock you can have. I got it from Dove Holes Scrapyard who had a load - whether they still have though I could not say. I got it for P7 but we haven't used any for a while.
It's not terribly expensive to buy new (a few pounds per length, IIRC). It comes in 6 or 7m lengths. One phone call to Twiggs in Matlock and I can get some delivered to Hucklow for you if you want - we have an account.
Nick.