Cliff Richard performed two shows on 16 and 17 June 1989, celebrating 30 years of his music career in front of 144,000 people. The concerts were recorded and was released as From a Distance: The Event album and VHS/DVD. Guests included The Shadows, Aswad, Kalin Twins, The Searchers, Gerry and the Pacemakers, The Dallas Boys, The Vernons Girls, Stock Aitken Waterman, Tony Meehan and Jet Harris. Wiki link