It's actually where I'm now working, but seeing as they asked me to do the ads etc so I know how cheap these are! They're pretty much half the normal retail price, inline with standard copper sets really.
Basically got a few sets of Megaleads HT leads in stock to clear. They're all silicone, 7-8mm and come in blue or red. I had a set on my AX GT a few years back which I also got cheap and was pretty impressed.
I know there are some here for 1.4 (TU), 1.6 and 1.9 carb and injection models including GTI. There are also some blue 16v ones left though I forget how many there are.
It's not just BX, theres all sorts of weird and wonderful stuff ignition and brakes-wise, and I've yet to sort through a massive pile of standard pads, water pumps and clutches!
If anyone wants to have a look the shop can be found here:
http://stores.ebay.co.uk/Southways-eShop