Sir Ian McKellen has described the "challenging" experience of lip-syncing the voice of acclaimed English artist LS Lowry for a new immersive BBC documentary, admitting the process was "not easy".
The veteran actor, 86, known for his roles in The Lord Of The Rings and X-Men, is set to embody the painter, Laurence Stephen Lowry, nearly five decades after his death in the Arts Arena film LS Lowry: The Unheard Tapes.