crude oil
Crimea concerns hit London-listed groups
As the row escalates into the worst east-west diplomatic crisis since the end of the Cold War, investment in Russia has become less attractive
Gammell steps down from Cairn Energy chair
Former Scottish rugby international oversaw London listing in 1988 with a market capitalisation of £25m. It now has an equity value of more than £1bn
Green group urges action to cut methane
The Environmental Defense Fund warns of risk as US oil production expands as it highlights cost-effective means of curbing losses into the atmosphere
