Here's the info from DJ.

AH Design (they're in Wales)
Address:
Mountain Ash
RHYD-Y-FOEL RD
LLANDDULAS
NR ABERGELE
CLWYD LL228EG

Phone:
01492512765

I Googled them, and found that [link=http://www.proctor-enterprises.com/]Proctor[/link] apparently sells their 1/4, 1/5 and 1/6 scale pilots.

Hope this helps. I know that there are a couple of guys around here that will be contacting them about their 1/3 scale pilots too.