The discovery in 2001 of the Buzzard field, with over 500m barrels of recoverable oil, was a rare exception in a basin where the average new field holds just 20m barrels.

• 去年，英国油气产业向财政部交纳的公司税高达78亿英镑(156亿美元)，已超过银行部门成为最大的纳税单位。