Casual clothing brand Uniqlo has posted a 5.5% decline in Japanese same-store sales during January.

The company said same-store sales fell year-on-year as the comparative impact of one less shopping day outweighed favourable sales of Ultra Light Down, HeatTech and other winter garments.

Uniqlo, which closed four stores in January, said own store sales slipped 3.4%. Total sales, including online, edged down 2.8%.