A friend of Ian Charleson and an admirer of his work , McKellen contributed an entire chapter to '' For Ian Charleson : A Tribute '' . A recording of McKellen 's voice is heard before performances at the Royal Festival Hall , reminding patrons to ensure their mobile phones and watch alarms are switched off and to keep coughing to a minimum . He also took part in the 2012 Summer Paralympics opening ceremony in London as Prospero from Shakespeare 's '' The Tempest ''
2012 Summer Paralympics opening ceremony
2012 Summer Paralympics opening ceremony
Ian McKellen