Sorry Roobarb. Glad Welwyn stepped into the breech hes very good at that. Have been performing MacBeth and am only now catching up on myself...
I meant Warrant Officer in my posting.
There are some books about life in groundcrew including:
Hornchurch Offensive: The Definitive Account of the RAF Fighter Airfield, Its Pilots, Groundcrew and Staff: Volume Two: 1941 to the Airfield's Final Closure
by Richard C Smith, Michael Donnet, Lieutenant (Foreword by), Peter Brown (Introduction by)
Aces, 'erks and Backroom Boys: Personal Stories from Britain's Air War 1939-45 by Edward Smithies
Erks Eye View: Memories of R.A.F. National Service
(ISBN: 1858580544 / 1-85858-054-4 ) by Russell, Eric W.
Dee