Great Britain’s Katy Marchant needed hospital treatment after a horrific crash at the UCI Track Champions League in London prompted organisers to suspend the event.

Spectators were also injured after Olympic champion Marchant collided with Germany’s Alessa-Catriona Propster in the first round of the keirin, with both riders catapulted into the audience at the top of the banking.

British Cycling said in a statement: “We can confirm that two riders and four spectators received medical treatment following an incident during tonight’s UCI Track Champions League event at Lee Valley VeloPark in London.