Simon Cowell and fiancée Lauren look smitten as she flashes £250k engagement ring

Lauren Silverman flashes her '$3.4M' engagement ring from Simon Cowell, 62, after BGT auditions

Amanda Holden jokes Simon Cowell is 'rubbish' at timekeeping whilst filming Britain's Got Talent

David Walliams jumps onto the bonnet of Simon Cowell's Rolls-Royce as they leave BGT auditions