Thanks guys, dunno how many eggs, I left her alone as soon as I noticed. The thing that alerted me to something being different was that the male was sitting on HER normal perching spot right at the front of the enclosure, he never sits there, so I went to have a look and there she was in the corner doing her business. Looked like he was keeping watch for predators or something!!
They've had a web cam on them that I've been watching from work, and both have been on the ground a lot today, she must have started laying whilst I was on the way home!
I think the temp in the containers is actually slightly lower than 28, so hoping that will be alright?
:0)