Here is the link to what Shauns Sticky Gammon is based on
BBC Good Food Sticky Gammon Steaks
He has changed it quite alot like and he won't give me a proper recipe but basically the gammon is chopped up not whole and he uses a pineapple juice instead of orange and chops pineapple up into it too. Oh and we have it with noodles not pak choi haha.
It is yummy though.