Exclusive: Paul Burrell says he suspects his wife knew he was gay

He was Princess Diana's confidante, right-hand man, her 'rock' and apparently 'the only man she ever trusted'.

Now in a television exclusive, Paul Burrell reveals why he thinks she guessed his biggest secret - the truth about his sexuality.

After years of speculation, the former royal butler joins us on the sofa to tell the world about his upcoming wedding to partner of 10 years, Graham Cooper.