The Guinness family is offering private investors who have at least £50,000 the chance to invest in an open-ended investment company, which aims to mirror the family’s personal investment portfolio.

The decision comes after a number of prominent financial advisers in the City suggested the possibility to the managers of Iveagh Ltd, the Guinness family’s office, which has $800m (£432m) in assets under management. The fund, which is listed in Ireland, will be open to investors from the start of September.