We went through a very confusing anarchic period in about 72/73 when a variety of shirts were being purchased and worn, particularly by officers. These ranged from a very pale duck egg blue through a vivid near turquoise greeny blue to the darker wedgewood style, often accompanied by the very fashionable knitted black tie. As a result few people looked alike in uniform and it was not until towards the end of the 70s when the wedgewood shirt appeared that 'uniformity' was once again established