Convenience store operator Seven & I Holdings has posted a 20% rise in operating profit to ¥292.1bn (£2.41bn) for the full year ended February 29, 2012.

Net profit increased 16% to ¥129.8bn (£1.07bn), however net sales fell 11.4% to ¥4.01 trillion (£33.03bn) mainly due to a change in accounting methods in North America.

The company’s financial performance was temporarily negatively affected by the Japanese Earthquake.