It is on these royal engagements with hardest-working royal Anne where Sir Tim offers his support with some even describing him as "invisible".
However, much like the late Queen, he is well-known for his good sense of humour and had crowds in stitches when he stood in for Anne at Founder's Day at The Royal Hospital Chelsea several years ago.
Sir Tim is often a discrete support at his wife's side as she travels up and down the country and across the world, which often earns her the title of the hardest-working royal.
Although he didn't receive a royal title upon marriage, he was made a Knight Commander of the Royal Victorian Order and was also a personal aide-de-camp to the late Queen.
Vice Admiral Sir Timothy Laurence, the husband of Princess Anne, was forced to pull out of a trip to South Africa with his wife last month after suffering an injury - in another health woe for the Firm.
