Stuck on last one and seem to be only person who can't finish....12a - Zero cooks etc in service once as providers of meals (4); .. explanation with the answer is always appreciated. Thanks
I have OATS - to fit in with O _ T _. Found it a bit obscure but - Zero = O. A.T.S. wartime females similar to Landgirls but based indoors. (Auxiliary Territorial Service)