Wytch Farm Which Is The Largest Oil Field In The UK Is Put For Sale By BP [Getty Images]

POOLE, ENGLAND - FEBRUARY 25: Nodding donkey pumping units work at one of the oil wells at the BP-operated Wytch Farm site which is western Europe's largest onshore oil field on February 25, 2011 near Poole, England. BP announced this week it put its stake up for sale in the site that was discovered in 1973. (Photo by Matt Cardy/Getty Images)

Getty Images News Matt Cardy