https://www.youtube.com/watch?v=_divG1VPlSg&fbclid=IwAR11oZMDJylm3GMofmf8wRd2Uw0SkSsoqvKHDNYfZJruIeVM3NIsl3dSJn8&app=desktop

Pointed out to me by a fellow UK collector and apart from showing the £50 oval it also looks like there is a higher value of the set (maybe 3) underneath some of the £100s so........any guesses?