Dame Helen Mirren regrets turning down an invitation to dine with the Queen.

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The actress – who won an Oscar last year for her portrayal of the monarch in hit film The Queen – fears she is now out of favour with the royal family after movie commitments stopped her from accepting an offer to attend a reception at Buckingham Palace.

She said: “When they invited me I was filming the movie National Treasure in America and I wouldn’t have been able to get back from London in time for the next day’s work so I had to politely decline.

“Buckingham Palace said they understood but I do wonder if I’ve blotted my copybook.”

The 62-year-old star, who was made a Dame Commander Of The British Empire (DBE) in 2003, also revealed people continually struggle to address her by the correct title.

She added to the Daily Record: “Since I received my damehood from the queen even English people call me Dame Mirren, which is not quite right. Although I don’t know why.

“I don’t insist on people using my title. Maybe if I was Lady Helen I would, but Dame makes you think of pantomime dames.”