Roast chicken in wine

Chickens
Originally uploaded by Mr_Chips

I have adapted this recipe from a Telegraph article by Xanthe Clay. It’s a lovely way to roast a chicken as it keeps it moist and produces a lovely sauce.
Ingredients
1 free range chicken
1 oz butter
1 clove of garlic
1 lemon
1 onion
stick of celery
2 or three carrots
a few extra vegetables of your [...]