BP shares dropped 0.4% to 425.4p after the Deepwater Horizon agreement announcement just before the market close.
But the stock had been higher earlier in the session as investors saw the deal removing some of the uncertainty hanging over the stock since the disaster.
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Around 88% of economists questioned by Ipsos Mori said leaving the EU would damage Britain's growth rates over the next five years.
Justice Secretary Michael Gove warned David Cameron that his failure to limit migration is 'corrosive' to public trust.
After a lively start to the long weekend with torrential, thundery downpours - a drier night.