Crossword Clue:

Its refined in Britain

Answer	Crossword Clue
PETROL	It's refined in Britain
ORE	It's refined
OPEC	Its products are refined

ORE	It's mined and refined
RAWBONNET	"I'm returning this feathered headdress-it's just not refined"
NORTHSEA	It's between Great Britain and Europe
RAF	Its Museum has a Battle of Britain Hall