Her mother moved the young family (older brother and younger sister) to Upminster in Outer London to be closer to both sets of grandparents.

Their Italian maternal grandmother cared for the children whilst Giuliana worked long hours as a dinner lady and nanny.

Gordon Ramsay Holdings Ltd agreed to cease their contract with the Connaught Hotel in September 2007, and in August 2008 Hartnett launched Murano, a fine-dining Italian restaurant in Mayfair.

In 2013 she opened Merchant's Tavern in collaboration with Neil Borthwick and Canteen founders Dominic Lake and Patrick Clayton-Malone.

From January to March 2016, Hartnett presented Tomorrow’s Food alongside Dara Ó Briain, Chris Bavin and Dr Shini Somara.

The BBC One show looks at the cutting-edge technologies and produce appearing in farms, supermarkets, kitchens and restaurants around the world, and how this is transforming the way we grow, buy and eat our food.

[17] In 2022, Harnett launched the award-winning podcast Dish with television and radio personality Nick Grimshaw in partnership with Waitrose.