With the Duke and Duchess of Sussex set to visit the UK with their children next month, it will be the first time in years that Archie, seven, and Lilibet, five, are going to be in the same country as some of their royal relatives.The children, who will be joining their parents as they travel for the one-year countdown party for the 2027 Invictus Games in Birmingham, have not seen their grandfather King Charles in person since their last trip to Britain in June 2022 for Queen Elizabeth II's Platinum Jubilee celebrations. But while some members of the Firm may be willing to welcome the pair with open arms, it's likely others could avoid seeing the couple altogether, following years of rifts, some of which were spurned by Prince Harry's tell-all memoir, Spare.A royal expert has claimed that while there are those who will be 'as constructive as the situation allows' in a quest for better relations – others feel 'totally betrayed' by the couple.Speaking to the Daily Mail, commentator Richard Fitzwilliams has shared the royals most likely to give their visitors across the pond a warm visit, and the ones who are more expected to steer clear.Elsewhere, there are relatives who fall into an 'in-between' category, and could go either way, as they are known for both their loyalty to the Crown – but also their warm connections to Harry.The Duchess has not made a prolonged trip to the UK since the late Queen's funeral that September, apart from occasional stopovers in London for foreign tours.Harry is said to be satisfied with security arrangements for the visit in mid-July and is now planning for his children to make the trip from California.The Prince has seen his father just twice in two years, and is still thought to be waiting for a decision on what security provision he and his family are entitled to in Britain. Buckingham Palace declined to comment on the Sussexes' planned trip.One of the 41-year-old duke's business associates based in Los Angeles claimed there had been a 'warming of the frost' between Harry and Charles in recent months.