Ah Mr Ascot, I did say many of the figures were approximate in accordance with typical Squadron UEs at the time and I'm sure there were undeclared reserve airframes outside the declared orbat at any one time. Further, I have to admit outside 1 Group, 2 Group, 18 Group and RAFG figures is where I tend to be a little hazy round the edges, I forgot to work in about 10 to 12 Wessex and Pumas a piece in Germany.
Best regards,
FB