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Rozentals, who won individual C1 silver at the World Under-23 Championships in 2023, is awaiting the outcome of the investigation.

And Brown, silver medallist at the Paris 2024 Paralympics, retained her women's C1 ITT world title in 29:27.93, leading a British one-two 4:09.42 ahead of team-mate Katie Toft, while in the C2 event Daphne Schrager won silver and Amelia Cass took bronze.

In the women’s C1-5 500m time trial, where Cox was among the favourites, she struggled to get rhythm on the bike and fell off within seconds of her start, unable to finish the race.

Keen to make up for her singles disappointment in the team event three days later, she helped GB win gold on Super Sunday alongside Jody Cundy and Jaco van Gass in the mixed C1-5 750m team sprint final.

Para-canoers Emma Wiggs and Charlotte Henshaw also won golds, while cyclist Finlay Graham triumphed in the men’s C1-3 road race.