KSI has signed a new open letter urging Black Britons to take the COVID-19 vaccine.The rapper and YouTube star is among the famous faces who have lent their support to the open letter, which has been written by comic legend Lenny Henry.Henry said that people should “trust the facts” surrounding the vaccine, with his message also being backed by Oscar-winner Chiwetel Ejiofor, Thandie Newton and DJ Trevor Nelson.The letter comes as statistics continue to reveal the gulf in vaccination rates