Sometimes it feels as if fashion time isn’t moving forwards, but is instead moving backwards. A case in point is that this last week has seen two new High Street collections launched by ladies who can only be described as legends of the 1960s and 1970s, Biba’s Barbara Hulanicki and Celia Birtwell. Now both grande Dames of fashion, and particularly fashion heroines of anyone who adores print, both Barbara and Celia and their designs remain as relevant as ever. Celia’s latest prints are emblazoning a fabulous new collection of dresses and separates for cool Japanese brand Uniqlo. Shirtwaister dresses, elegant, masculine cut shirts and cute, versatile long sleeved t-shirts are…