According to newly filed accounts with Companies House, the firm has total assets of £21m and owes just over £3.5m to creditors within one year.

The firm of the former Manchester United manager is valued at £17,483,373, which is an increase of more than £5m from the previous year.

ACF Sports Promotions also made a profit of about £3m for the year and its value was boosted by the addition of his £2m football memorabilia collection to its assets.

ACF Sports Promotions’ assets include an investment portfolio worth almost £13m and more than £2.3m held in a bank account.

The results, which cover the period up to the end of June 2020, state that its revenue is derived from “appearances, image rights and royalties from the writing of books”.