Thank you very much Kristen,
Unfortunately I think the male was too young (hence it was such a surprise that they laid) and they are starting to look infertile. No worries though since I have a good idea what to do now and can hopefully try again when he's a bit older. He called all of last night as well lol, so he must be ready.
They are just in they're regular cage with me, but I think the person before me had them relatively dryer, so the temp and humidity change must have been the stimulant. The humidity approaches 90% at night, and the temps were at around 75F (need to get it a bit warmer really) but they still didn't mind, and it shows they've settled in well!
Thanks again Kristen (and thanks for the offer) Now I have a bit more time I'll try and send off for that mag article.
Rob