Hundreds of women in America and the UK are planning legal action after a contraceptive jab left them at risk of developing potentially lethal brain tumours.

A study in France revealed last year that injections of medroxyprogesterone, marked under the brand name Depo-Provera, made if five times more likely for a woman to suffer from meningioma, a type of non-cancerous growth.

A lawsuit was launched last week in Florida by 400 American victims of the drug, with about 200 women in the UK also considering legal action against manufacturer Pfizer, according to the Daily Mail.