He served as the Queen Mother's page of honour from 1971 to 1973 and often stayed with her at the Castle of Mey and the Royal Lodge, Windsor.

[4] He was educated at Sunningdale School and Eton College before reading Land Economy at the University of Aberdeen.

[1] He left the army in 1984, going to work in the City of London for the stock brokerage firm Strauss Turnbull.

[11][12] After resigning his ministerial post, Strathmore sat on the board of Polypipe from 1994 until it was acquired by IMI plc in 1999.

He also served as president of Boys' Brigade from 1994 to 1999 and as patron of the Friends of the Bowes Museum in County Durham, a position he inherited from the Queen Mother.

In 2002, as the head of the Bowes-Lyon family, he walked behind the Queen Mother's coffin during her funeral procession and attended the private service of committal in the King George VI Memorial Chapel.