Allen, 65, who has an extensive boardroom experience, was British broadcaster ITV's first chief executive officer and now serves as chair at infrastructure group Balfour Beatty.

"Charles has a clear mandate to refresh THG's Board and further strengthen governance and diversity," a statement from THG, which owns beauty retailer Lookfantastic and supplements firm Myprotein, said.

Allen's appointment comes months after THG decided to select an independent chair to align itself to British corporate governance rules before a proposed premium listing on the London Stock Exchange.

The Manchester-based company, also known as The Hut Group, went public in a bumper initial public offering in 2020, but has since seen its market value sink amid governance concerns.

Allen, also a Labour party member in Britain's upper house of parliament, will help develop THG's management team as well as refine the company's strategy, it said.

(Reporting by Sachin Ravikumar in Bengaluru; editing by Uttaresh.V and Sherry Jacob-Phillips)