Good news, Yoda final ate again on Sat night. I have now moved him into a wooden viv with ceramic heat bulb on a pp stat. Temps are very stable changing only by approx 0.5-1 degree at night and after a few days of settled temps, he happily took a mouse.
Hope this is going to continue over the coming weeks
Thanks for all your advice, also thanks to my new reptile supplier/retailler as they are very clued up on their stuff.
Nuttierman 1.0 Royal Pastel - Yoda 1.0 Hognose - Pumba 0.1 Spider Royal - TBD 1.0 Border Collie - Benji Loads of Tropical Fish