In reply to toad:
Yep its an older one called the Arran 5 I think.
Lightweight green nylon with a separate inner and no fancy venting system- just one that can be adjusted from outside which I find perfectly acceptable.
Probably one of the simpler models in the range at the time- no reinforced edge for example or outer vents but still top quality materials and I'm happy with it. In reality plenty of air can get in under the eaves for a fire and I don't think an (expensive) inner tent is really needed (the old outers had no netting in them which the newer ones seem to)just something for a groundsheet, even if just karrimats. Most of the time I have my groundsheet zipped right back anyway to expose the ground and allow spillages to seep away- a great feature!