Evening All,
Thank you all again for the supportive remarks which are greatly appreciated.
I have been plodding along with the rigging and have now completed the undersurfaces. This tested my patience a little but as it does not have to be done by a deadline I put on some wires and then went and did something else. I have already written that most of the wires are accessible which means that although there are a lot of them, none are what I consider to be in difficult places to get to - yet. I have completed the undersurfaces so that I do not have to keep handling the model - you can see from the photos that there are not many places to put one's fingers when it is rigged. I hope too that the photos help to illustrate that provided that the rigging is done systematically, it is possible to complete it without missing any wires, (not that many people would notice if I did, although I can guarantee that someone on this site would!)

This image shows that I rigged the wing control wires before I tackled the rear of the aeroplane. I will describe in detail in the next post how I managed to link five wires into one for the wing warping controls - I had intended to show a photo of work in progress and then forgot to take the image! Note that I have repaired the spear extension from the tail.

I had also rigged the undercarriage because this allowed me to focus on the front end of the model: by doing this I was able to reduce the amount of handling of the model.
The images show the completed underside: I rigged the tail by starting on the forward edge of the right hand side and added each wire in turn around the tail. Then I completed the remainder of the wires underneath. To glue the control wires to the wings and tail surfaces I put a tiny drop of superglue on one end of the wire and another drop on to the attachment point on the model. I had made some small marks with the end of a pair of dividers on the wing and tail surfaces where the control wires were to be attached: this ensures accurate spacing and makes placing the ends of the wires simple. It also marks the place from which to measure the wires. With a little thought and pre-planning rigging can be made a great deal easier than it may look!
I have not counted all of the wires that I have put on, but judging from the time taken there will be many more than on the FB 5 Gunbus which had over 100.
Thanks for looking.