Profits at energy giant BP fell 18% last year as it continued to count the cost of the fatal Gulf of Mexico oil platform explosion in 2010.

Underlying replacement cost profits at the group were $17.6 billion (£11.2bn) in the year to December 31 after BP said the cumulative cost of the incident had reached $42.2bn (£27bn).

It still needs to settle the bill for civil claims but warned it would only be on "reasonable terms".

Profits in its fourth quarter fell by a less-than-expected 20% to $4bn (£2.5bn), despite the group being hit with a $4.5bin (£2.9bn) fine.