[2] She claimed the women's gold medal at the 2019 420 World Championships in Vilamoura, Portugal, alongside Milly Boyle.

[6][7] Heathcote formed a new mixed 470 partnership with two-time Olympian Chris Grube for the 2023 Sailing World Championships in The Hague, Netherlands, where they finished 13th, narrowly missing out on qualification for the 2024 Summer Olympics.

[1][3] However, in March 2024, the duo took silver at the 470 World Championships in Mallorca, Spain, which, when combined with another British boat coming ninth, was enough to secure a last-minute qualifying quota place for the Games in Paris.

[10][11][12] In May 2024, Heathcote and Grube came 16th at the 2024 470 European Championship held at the Yacht Club de Cannes in France.

[13][14] At the Olympics, Heathcote and Grube finished 11th, missing out on the final day medal race by one place having ended one point off the top ten.