LONDON—UK retailer Primark is seeking an agency for public relations counsel as it attempts to improve its reputation amid concerns over its supply chain practices.

The search comes 18 months after the collapse of a Bangledeshi building killed 1,100 garment workers. Primark was one of a number of UK stores that sourced products from the factory.

Since then, Primark has led the way in compensating victims, emerging as the biggest contributor to the fund organised by the International Labour Organisation. The company's business performance continues to impress, despite lingering concerns over the use of cheap labour to make clothes for Western consumers. 

The Holmes Report understands that the Primark parent Associated British Foods has contacted a handful of firms in London regarding the assignment, which will aim to defuse criticism by highlighting the company's ethical commitments.