File photo - Princess Diana and Prince Charles, with their sons Prince Harry L and Prince William, stand outside Buckingham Palace August 19, 1995 during Britain's VJ Victory over Japan Day commemoration service Reuters .

Letters sent by Princess Diana to a Buckingham Palace head steward reveal that Prince Harry was "constantly in trouble" at boarding school.

Diana sent the six handwritten notes - which are expected to sell for thousands of pounds at auction - to Cyril Dickman in the 1980s and 90s.

In one of them, sent five days after Harry's birth in September 1984, Diana said it had been a "particularly happy time"

She added: "William adores his little brother and spends the entire time swamping Harry with an endless supply of hugs and kisses, hardly letting the parents near!

TITANIC TREASURES SOLD AT UK AUCTION

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