Huge wealth of Rishi Sunak's family not declared in ministerial register

Exclusive: Akshata Murty, Sunak's wife, holds multimillion-pound portfolio making her richer than the Queen

The chancellor, Rishi Sunak, is facing questions over the transparency of his financial affairs after a Guardian investigation established that his wife and her family hold a multimillion-pound portfolio of shareholdings and directorships that are not declared in the official register of ministers' interests.

Akshata Murty, who married Sunak in 2009, is the daughter of one of India's most successful entrepreneurs. Her father co-founded the technology giant Infosys, and her shares in the company are worth 430m, making her one of the wealthiest women in Britain, with a fortune larger than the Queen's.