By Monica Charsley Kate Middleton appeared to be “keen to take the lead” as she stepped out with Prince William following her recent health woes, according to an expert. In newly-released footage, the Princess of Wales could be seen walking “confidently” next to her husband as they visited the Windsor Farm Shop on the weekend. Kate was dressed down in a jumper and leggings, whilst William put on a baseball cap, after they left Adelaide Cottage for a quick trip on Saturday. The mum-of-three was seen smiling from ear to ear as she went to get some fresh air by the popular store. Judi James, body…