General view of the entrance of the Chelsea and Westminster...

CHELSEA, LONDON, GREATER LONDON, UNITED KINGDOM - 2018/06/16: General view of the entrance of the Chelsea and Westminster Hospital where Billy Caldwell is being treated. The Home Office has released the medicinal cannabis oil it confiscated from Billy Caldwell's family, who had been using it to treat his severe epilepsy. The government backdown came shortly after the 12-year-old's mother, Charlotte, said she was confident the Home Office would grant a special licence so her son could be treated with the anti-epileptic cannabis medicine. (Photo by Gustavo Valiente/SOPA Images/LightRocket via Getty Images)