Thanks for the encouragement people!

I've just been out for an hour and left him in his crate and he was silent when I came back. However, he has destroyed the piece of cardboard I put in incase he needs 'to go'.

He is doing really really well with the house training. I take him out every two hours and sit with him til he goes. Then, after much praise we come back inside together. So far only a couple of accidents in the house (which I blame myself for). I just wish he'd calm down in the crate.