Exclusive - BP exploration boss leaves after spending cuts

By Dmitry Zhdannikov LONDON (Reuters) - The head of exploration at BP, Richard Herbert, is leaving the British oil major after slightly more than two years in the job, a period in which the company slashed spending on the search for new deposits. Herbert, a BP veteran and a long-time ally of chief executive Bob Dudley, rejoined BP in October 2013 after several years at rival Talisman Energy. "Herbert simply didn't get a chance to drill a lot of wells ... given where BP stood post-Macondo and whe