This article was originally published in 2012. Bohemian Rhapsody, the story of British rock band Queen, is in cinemas now.

Freddie Mercury’s mother was watching the Olympic closing ceremony when her adored son’s image suddenly appeared on a vast screen. “I cried out: 'Oh my dear boy, where are you?’” she tells me. “I miss him so much.” A cheeky smile then spreads across her face. “They showed John Lennon too, but there was much more applause for my Freddie.”

Freddie, born Farrokh Bulsara, the frontman of rock band Queen and charismatic solo performer, died in 1991 of Aids-related pneumonia. He was 45. Jer Bulsara, who is 90 next month, has found immense consolation in his continuing popularity, yet when talking about him her voice still cracks with emotion.

“His passing doesn’t seem more than 20 years ago,” she says. “I still feel he is around because his music is played so often. It reassures me that he is still loved by people all over the world, but of course, none of them love him as much as his mother.”

Mrs Bulsara, who lives in a purpose-built three-bedroom bungalow in Nottingham, is tiny, immaculate and rather stooped, but her brain is sharp and her kind eyes sparkle when she talks about “my boy”. She is a practising Parsee, a religion that follows the prophet Zoroaster which arrived in India from Persia in the 7th century. She is also deeply private and this is the first in-depth interview she has given. The reason is a lavish new book: Freddie Mercury, The Great Pretender, A Life in Pictures that is full of wonderful photographs, including several never-before seen images, that span the rock star’s life.