UPDATE 3-BP reports biggest ever annual loss
* BP shares slide 8 pct after results miss forecasts
* BP reports 2015 loss of $6.5 bln, to cut 3,000 more jobs
* 2016 spending seen at lower end of $17-19 bln range (Updates throughout)
By Karolin Schaps and Ron Bousso
LONDON, Feb 2 (Reuters) - BP slumped to its biggest annual loss last year and announced thousands more job cuts on Tuesday, showing that even one of the nimblest oil producers is struggling in the worst market downturn in over a decade.
The British oil and gas company, which is still grappling with about $55 billion of costs from the oil spill in the Gulf of Mexico in 2010, said it would cut 7,000 jobs by the end of 2017, or nearly 9 percent of its workforce.
BP said it lost $6.5 billion in 2015 and its fourth-quarter underlying replacement cost profit, which is the company's definition of net income, came in at $196 million, well below analyst expectations of $730 million.
BP shares fell as much as 8.5 percent and were 8.1 percent lower at 1136 GMT, the worst performer on the pan-European FTSEurofirst 300 index and on track for their biggest one-day fall since June 2010.
The company's 2015 loss shows that even its "shrink to grow" strategy adopted after the Macondo rig explosion in 2010, hailed as the best preparation for a weak oil market, was unable to buffer the impact of the lowest oil prices since 2003. Continuación...