London-listed energy giant Centrica shares plunged nine per cent on Thursday morning after the group paused its share buyback programme in the face of a major earnings hit. The owners of British Gas reported lower 2025 earnings than in the previous year, but the group says it was resilient in a challenging market. The group’s adjusted operating profit fell some 50 per cent, from £1.6bn in 2024 to £800m, while adjusted pre-tax profits landed at £1.4bn as energy prices stabilised following the previous year’s spikes.…