Kate Middleton and Prince William have been granted a "royal reprieve" while their children grow up – but it could soon be set to come to an end, an expert has said.

As senior members of the royal family, the Duke and Duchess of Sussex are required to attend official engagements on behalf of the palace.

For William and Kate, this has recently included their tour of Scotland, the Euro 2020 final between England and Italy at Wembley and appearances during the Wimbledon Tennis Championship.

For the last few years, these engagements are said to have been planned around their childrens' school timetables and even "around morning and afternoon school runs".

Kate Middleton and Prince William's 'royal reprieve' to end soon, claims expert
Kate Middleton and Prince William are said to have had something of a 'reprieve from their duties in recent years

But The Cambridges could soon find themselves with busier schedules and more official travel trips as their royal workload increases as the children grow up, with Prince George celebrating his eighth birthday earlier this month.

Gertrude Daly, who runs the Gerts Royal Replies website, has told the Daily Star she thinks as the Cambridge children grow older, their parents may have to take on more official duties.

Kate Middleton and Prince William's 'royal reprieve' to end soon, claims expert
The Cambridges could see their workload increase as their children grow older

She said: "Prince William and Duchess Kate have been taking on more and more duties over the years, but while their children are young and living at home, they have been given a bit of a reprieve.

"In a few years, The Cambridges will have busier schedules, more traveling, and they wouldn’t always be able to take so much time off during their kids’ school holidays.

Kate Middleton and Prince William's 'royal reprieve' to end soon, claims expert
The Cambridges on a recent royal engagement at Wimbledon

"They are enjoying this precious time with their kids. And their scheduled official engagements are often planned around morning and afternoon school runs."

Earlier this year the Queen returned to her royal duties just a few days after the death of her husband the Duke of Edinburgh.

Princess Anne is historically the hardest-working role in terms of numbers of engagements and carried out 148 official engagements last year, spending 145 days at work despite the coronavirus pandemic.

Kate Middleton and Prince William's 'royal reprieve' to end soon, claims expert
As senior royals the Cambridges attend many official engagements each year

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The number of official royal engagements dropped significantly in 2020 because of the national lockdown.

Charles took on 146 engagements over 141 working days, while Her Majesty the Queen took third place, attending 136 engagements over 130 days at the age of 94.

Prince William attended 104 official royal engagements last year while Duchess Catherine pulled off 79 engagements in 77 days.

In July Kate Middleton had to self-isolate after going to Wimbeldon on an official engagement and then later being told she had come into contact with a Covid-infected person.