BP's pipes in Alaska might be leaking like a sieve, but its coffers are nice and healthy. North Slope crude oil closed above $70 a barrel for the first time on Wednesday – on the back of concerns about Iran and tensions in Nigeria. It was only in May 2004 that the price hit $40 a barrel for the first time. Five months later it topped $50. In August 2005 it broke $60. Now it's beyond $70. Any bets where it will stop?

More bad new for BP: It has admitted the Baku-Ceyhan oil pipeline will cost 30 per cent more than first expected. David Woodward, head of BP Azerbaijan, said yesterday the 1,768 km (1,099 mile) pipeline would cost $3.9bn (£2.18bn) rather than $2.95bn.

Although that is bad news - you just wait until the company starts experiencing corrosion problems on this pipeline. It will make its Alaska problems seem insignificant. Or so the rumour goes...