People passing a large-scale sign for H&M outside its flagship store on the corner of Oxford Street and Regent Street in London, U.K., on March 30, 2023.

H&M plans to sell second-hand clothes and accessories at its flagship store in London from Oct. 5, as pressure increases on fast fashion companies to curb their environmental impact by encouraging the reuse and recycling of garments.

With the European Union planning new regulation to crack down on textile waste in the bloc, H&M has said it is "part of the problem" and that the way fashion is produced and consumed needs to change.