Tension between Meghan Markle and Kate Middleton could be behind the dramatic decision by Harry and Meghan to move out of London’s Kensington Palace, where they would be living in the shadow of the future king and queen, according to a new report. A source is quoted by the Daily Mail as saying: “Kate and Meghan are very different people. They don’t really get on.” The official announcement this weekend that Harry and Meghan are to move out of their home on the grounds of Kensington Palace, relocating 20 miles away to a 10-bedroom cottage in the Frogmore House estate, not far from Windsor Castle, caught observers by surprise. The Frogmore estate is the private possession of the family, and the house is not inhabited. It is used for official events and is open to the public only a few days each year, meaning Harry and Meghan can enjoy a high degree of privacy living on the grounds. It is expected that Meghan’s mom, Doria, will live at their new home too, as she is believed to have recently moved to the UK. Palace aides have sought to play down speculation that a rift between Harry and William is to…