Hi Bluesy, I used to live in Ayshire but I'm in England now. I use bees wax for my main waxing, also cobblers wax. Do a google or Ebay search for those. Cobblers wax can be bought from Bagpipe suppliers, you'll get enough to last you about 200 years for about a fiver.
I only really use wax for the first few inches of silk just so it sits well on the shank and adds a bit of stick. For Bobs bits and Hoppers I use Blended seal, usually 3 colours. For black I'd use 70% black, 25% dark claret and the rest deep blood red. Rib it with clear 2lb nylon, not flourocarbon, to keep the profile down. Then attack it with velcro to get that 'halo' effect. Blended furs help with this, you get a nice very dark claret with a few red flecks. Very few insects are 100% black, brown or green in solid shades. Here's a pic I took for another forum, it might be useful to see the black, claret, red mix...