1) Maris Piper potatoes, they roast well
2) Peel, if necessary and then boil or microwave them at least 2 hours in advance, so they can dry.
3) Goose fat or beef dripping, 1/4 inch deep and pre-heated to gas 5. Add spuds for half hour turning after 15 minutes.
Should be yummy!
Oh, and whatever meat you're having will be all the better for resting out of the oven for the half hour while your cooking the spuds and other veg.