Grace Mandeville

In 2016, Mandeville and her sister began presenting for MTV UK.

Mandeville currently lives with her family in Surrey. She began dating Ryan Anthony, a cyber security engineer, in May 2016, and the couple married in August 2019.

Mandeville models prosthetics for Open Bionics. In 2015, she modeled a Star Wars themed prosthetic arm for Fashion Finds the Force, designed by Open Bionics. She also modeled a prosthetic arm for Sophie de Oliveira Barata's "Alternative Limb Project" from which Mandeville was featured in the New York Times. Mandeville has also modeled for Dazed Magazine and TenEighty Magazine.

Mandeville and her younger sister Amelia created a YouTube channel in December 2013 called the "Mandeville Sisters". The channel has since amassed over 114,000 subscribers. The sisters film weekly vlogs called the "MandevWeekly," and additionally post one other video during the week. They have filmed a number of videos surrounding disabilities and everyday life with one hand. The channel also includes collaborations and interviews with celebrities and other Youtubers.

Mandeville began seriously acting when she was fifteen, getting mostly advertorial jobs. Prior to this she appeared as an extra in Harry Potter and the Order of the Phoenix as a Hogwarts student. In 2010, she was cast as Holly in the CBBC show, The Sparticle Mystery, which premiered in February 2011. Mandeville also appeared in BBC3's The Fear alongside her younger sister, Amelia. She has also appeared in advertisements for Huawei and Matalan and is frequently in CBBC shorts such as Lifebabble and Whoops I Missed the Bus with her sister. In 2016, Mandeville also appeared as a panelist in the CBBC show, The Dog Ate My Homework.

Grace Mandeville (born 28 November 1994) is a British actress, vlogger, model, television presenter, and internet personality best known for portraying Holly on CBBC's The Sparticle Mystery and for her and her sister's YouTube channel, "Mandeville Sisters."