The prime minister's former aide Dominic Cummings says that Health Secretary Matt Hancock lied in meetings. He also claims that senior government officials still don't understand exactly how Covid-19 is transmitted and are overemphasising hand-washing. His comments came as he answered questions in front of the joint Science and Technology Committee & Health and Social Care Committee. Report by Taylorjo. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn