Alex Winter of Showbiz Kids, his new documentary chronicling the grey areas of childhood stardom. Debuting on Sky Atlantic earlier this week, Winter – himself a former child star who shot to fame as time-travelling dude Bill alongside Keanu Reeves’ Ted in 1989’s Bill and Ted’s Excellent Adventure – delves deep into the glitzy early years of a host of stars to tell a soberingly down-to-earth story of youth and fame.