The 'Fab Four' will have two different royal households which may see them diverge on charity work (Image: Getty) The Royal Foundation, which has been going strong since it was set up in 2009, was created by the princes before Kate, 37, and Meghan, 37, joined on later dates. It is used by the royals to spearhead their charitable ambitions and focuses on four main areas - mental health, helping young people, the armed forces and conservation. One well-known programme, Heads Together, aims to dispel the stigma associated with mental illnesses and encourage those experiencing difficulties to seek help. Related articles Meghan Markle and Harry’s split from William and Kate ‘had to happe... William, Kate, Meghan and Harry urge New Zealand to 'stay strong' The cause was close to William, 36, Harry, 34, and Kate’s hearts, and in 2017 Heads Together was chosen as the charity of the year for the London Marathon. Many fans had hoped this influential trio would morph into the “Fab Four” after Meghan, 37, married into the family last May, but rumours of friction between her and Kate began swirling within months of the Windsor royal wedding. After speculation mounted about the princes’ decision to operate out of separate households, on Thursday the palace announced a split between the Cambridges and the Sussexes - which will include a “review” of charitable work. The statement read: “Jason Knauf has been appointed as senior adviser to The Duke and Duchess of Cambridge. The Sussexes together with the Cambridges were nicknamed the 'Fab Four' (Image: Getty) The Queen has approved the creation of a new royal household for Harry and Meghan (Image: Getty) “His responsibilities will include advising Their Royal Highnesses on their charitable initiatives – including work on the environment, mental health, and early childhood – and supporting a review of the charitable structures that underpin their work.” While it remains unclear what the brothers’ shift in direction could mean for their chosen charities, it is possible the two couples may be keen to focus on their own initiatives in the future, tailored to their different tastes. The split will mean Harry and Meghan will have separate communications staff to that of William and Kate and their office will be based at Buckingham Palace as opposed to Kensington Palace/ The statement confirmed the changes will be in place this spring - around the same time the Duke and Duchess of Sussex will move into their new home, Frogmore Cottage, in Windsor - 23 miles from Kensington Palace. Heads Together, launched by William, Kate and Harry, was the charity of the London Marathon 2017 (Image: Getty) Meghan and Harry kicked off the Invictus Games in Sydney while on tour last year (Image: Getty) Related articles Meghan Markle 'not close enough' to take baby advice from Kate Meghan Markle vs Kate: Duchesses EYE-WATERING net worth revealed This has reignited rumours of a royal rift between Meghan and Kate, which first began to surface late last year. The Foundation has been used as a vehicle to promote a number of projects including the Invictus Games, a multi-sport event for injured military personnel. In the wake of the Grenfell Tower tragedy, the Foundation was used to set up a community hub to help victims and their families. The palace said the decision to split the royal households was “long-planned” and has been approved by the Queen. Prince William, Prince Harry and Kate take part in a relay race as they promote Heads Together (Image: Getty) The announcement about the splitting of royal households comes amid rumours of a rift (Image: Getty)All rights reserved for this news site express.co.uk and under his responsibility