Was browsing through my old files and discovered this Dragon Warriors adventure. James Wallis originally commissioned it for publication in Mongoose Games' Signs & Portents magazine but chose Betrayal at Desolate Mountain instead (probably because I missed my deadline!).
It's a short beginner adventure set in an underworld beneath the Cornumbrian city of Criggen Varras, with possibly too much scope for initial expansion (you've really got to come up with a second level to it straight off the bat).
Still, if anyone uses it, let me know how you go because I never managed to run it myself!