Casino has posted a 5.6% first-quarter sales increase, including calendar effects and higher petrol price, to reach €6.61bn (£5.8bn), with a 16.4% jump in international markets and a 0.4% gain in the struggling French market.

International operations, which accounted for 36% of sales, showed a sharp acceleration in organic growth during the quarter, with Brazil the main growth driver.

Sales in France rose 0.4%, with growth in convenience store sales helping to offset a drop in sales from the larger Géant Casino hypermarkets.