By Phoebe Tonks & Joseph Wilkes Prince Harry is displaying bold signs on his long-awaited visit back to the UK that the previously “restricted and closed off” Duke has undergone a major transformation. A body language expert has taken a good look at the estranged Prince’s swagger during his somewhat fraught solo trip to Blighty and has revealed Harry appears to have blossomed, becoming “his most confident self” and feeling “very positive and proud about where he is right now”. The Duke of Sussex, who it was announced will not reunite with his father, King Charles, during his visit, and is thou…