Thanks for the advise guys....
He still hasn't come out of his hide and I covered the front of the terrarium this morning to give him some extra privacy and put some fresh water down.
As advised I will wait another 5 days / week and get some large mice which he ate last. I hope he acclimatises to his new home soon and also hopefully he has a meal next week.
Temps seem fine and humidity is 55-56%
Will keep an eye and update this thread accordingly.
Cheers