Oil firms and miners boost FTSE 100
(Close): London's leading shares rose 1% on Thursday as markets digested Opec's agreement to cut oil output.
The benchmark FTSE 100 index finished 70 points higher at 6,919.42.
Outsourcing firm Capita slumped 26.7% after it said profits would be hit by one-off costs of up to £25m, because it was late to implement new IT systems for London's congestion charge.
The second-biggest faller on the index was Alton Towers owner Merlin Entertainments, which slid 5% after reporting that visitor numbers at the theme park were still recovering.
A crash on the Smiler rollercoaster in June 2015 injured 16 people.