09:00David WhiteZach Callison, Grayson Matthews 26/10/2018BBC Radio Cornwall Duration: 2 hours, 30 minutes Fri 26th Oct 2018, 09:00 on BBC Radio CornwallZach, who plays Steven Universe in the TV series of the same name, will be flying in for the London Comic Con. Plus actor Grayson Matthews talks about his latest movie.GenresEntertainmentBrandDavid White Source: BBC Online