Ananova:

It's been revealed the Queen Mother used to sing to her staff.

She liked to belt out the song Thank You Very Much For Our Gracious Queen to her staff after dinner.

Sir Paul McCartney's brother Mike wrote the song for his band The Scaffold in 1967.

He discovered the Queen Mother's love for the ditty while talking to her servants at her former home Castle of Mey in Caithness, Scotland.

The song was also featured in Cadbury's Roses advertisements.

Speaking about the song he told The Sun: "I wrote it in a two-up, two-down."