Despite managing to wave to the nation on the balcony and celebrate the Platinum Jubilee - concern surrounding the Queen's health and mobility is continuing to grow.
In fact, the 96-year-old monarch pulled out of several jubilee engagements after finding the first day 'very tiring'. Just yesterday, it was reported her son and heir to the throne, Prince Charles, will stand in for her Majesty at this year's Commonwealth Games.
But with a staggering 2,000 official engagements annually, and links to around 3,000 organisations - who will step in to do the work if the Queen isn't able? The Sussexes are out of the picture, Andrew has stepped down, and Princess Anne (who attended 387 engagements last year) is in her 70s.
Despite Charles' call for a 'slimmed down' monarchy when he becomes King - his loyal helpers William and Kate have their hands full with three children, who will be in full-time education for the foreseeable.
So who is left? Well, here are 13 B-list royals you may have never heard of, but could soon be seeing a lot of...
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Mike and Zara Tindall
Princess Anne's daughter Zara Tindall is already tipped to take on a number of public duties in the future, according to royal author Brian Hoey - who says she has "very good relationship" with her Uncle, Prince Charles.
Mr Hoey told Express.co.uk : ""She is very popular with Prince Charles and also with William and Harry, she famously gets on well with her cousins. If there is a vacancy, if they need somebody to stand in for things, she would be the right person to do it."
Zara's husband Mike Tindall may also step into the spotlight - as he recently garnered attention for entertaining Prince Louis during the Jubilee.
Body language expert Judi James says Kate Middleton has shown a 'high level of trust' in Mike, while William 'worships him'.
Princess Eugenie and Princess Beatrice
You probably already know about Princess Eugenie and Beatrice - thanks to their scandal-hit parents Prince Andrew and Sarah Ferguson. But is it time the sisters started to make a name for themselves?
Both of the Queen's grandchildren, along with Zara Tindall, attended the St Paul's Platinum Jubilee service despite the Queen's absent and seem to ramp up their royal duties.
According to one expert, the sisters were 'devastated' by their dad's scandal as they had planned to increase their duties after Meghan and Harry left the royal family. But any expansion of their roles will now have to be placed on hold after the Duke of York was stripped of his military titles and royal patronages, according to the former editor of the 'The International Who's Who' book series.
Lady Louise and James, Viscount Severn
Lady Louis, 18, and James, Viscount Severn, 14, were one of the few non-working royals to be allowed on the balcony for the Queen's Jubilee - which may show just how much of a chance they have at growing up to be part of working monarchy.
The siblings are the children of Edward, the Earl of Wessex and Sophie, Countess of Wessex - and have already started getting experience with media appearances. They do not go by the Princess/ Prince title as their mum wanted them to grow up "with the understanding they are very likely to have to work for a living".
But with everything that's happened to the royal family over the last few years, a spot could easily be saved for them...
Sam and Arthur Chatto
Samuel and Arthur Chatto are the Queen's great nephews, and grandchildren to the late Princess Margaret. Up to now, the siblings have stayed out of the lime light - both attending Eton before moving onto the University of Edinburgh.
While Samuel has been living his best life travelling the world and even completed yoga training in India, Arthur has already dipped his feet into the royal working world as he acted as Page of Honour for his grandmother from 2009 to 2015.
Perhaps the two dashing brothers is just what we need to help modernise the royal family?
Lord Frederick Windsor and Lady Gabriella Kingston
The only son of Prince and Princess Michael of Kent, Lord Frederick Windsor is a financial analyst married to British actress Sophie Winkleman. While they do not currently carry out royal duties, they do live in Kensington Palace and have represented the Queen on a handful of trips over the years, reports Yahoo!.
The Windsors are also able to take on royal patronages for charities, and hope "the attitude of charitable giving would pass on" to their children. As the Queen's mobility is in doubt, perhaps Lord Frederick Windsor will complete more trips abroad on her behalf this year.
Lady Gabriella Kingston is Frederick's sister and currently works as a freelance writer. Gabriella is not a working royal, so does not need to carry out official engagements. But she's sometimes seen at large family events like the annual Trooping the Colour parade.
Which royal do you want to see more of? Let us know your thoughts in the comments section below
