A BP spokesman said its lawyers were allowed to "review" their Deepwater Horizon report, and had provided legal advice and council to the investigative team, but would not elaborate on what that entailed.
"Some internal and external" lawyers for BP worked with investigators who prepared the report. This raises questions about the independence of the report, which assigned much of the blame to contractors Transocean and Haliburton.
The report was quickly blasted by Transocean, Haliburton 'and others'. As operator, BP faces many lawsuits over the accident.

"For BP, the stakes are high as it tries to dodge accusations of gross negligence ..... Under the Clean water Act, BP might have to pay fines of at least $1100 a barrel of oil spilled. But if the government finds the spill resulted from gross negligene, the fine could be $4300, potentially boosting the total to more than $20 billion."
Wall Street Journal, Sept. 10, 2010.

Other news-
Norway has halted new offshore projects until the causes of the Gulf rig blast are known.
North Sea producers are fighting to convince the British government that the UK does not need a moratorium on drilling, like the one imposed in the U. S. British MPs will grill outgoing BP PLC CEO Tony Hayward as part of an investigation into risks.
Doubt that he will be more open-mouthed with them than he was with the U.S. Congressional Committee.