Holly grew up in Leicestershire, where she is still based, and was encouraged to takeup the sport through her mother.
In 2014, Holly made her Nations Cup debut with Dougie Douglas in Gijon. The following year she won her first Nations Cup leg with the team in Odense where she also won the Grand Prix two days later.
She took up the ride of Hearts Destiny last year and together they have moved quickly up to five star level, jumping in the Nations Cup team at both Hickstead and Dublin.
This year's World Equestrian Games will be Holly's first appearance at a major championship.