Update.
I have decided to go ahead with the Concorde build, however at a reduced cost. My initial idea was to buy the plan and Vac set only. I would then buy a laser cutter from the savings made which would also be used for future projects. However given I have no experience with with these and the time it would take me to get up to speed I decided to go for the cnc as well at £124. On arrival the Vac set had been crushed but Slec are sending me a replacement. The wood pack from TN was £55 but I do have a good stock of Balsa etc and thought I may have enough, unfortunately not but the cost of what I need to buy is £27. I seem to have all the other parts I need servos and wiring. I have the four FMS fans at £18 each and have bought 4 x 40amp ESC at £13 each. I have 2 suitable batteries. That only leaves the retracts which I couldn't justify at £198. I have several sets of retracts which are from planes which have gone to the plastic bag. I have converted a set for the Concorde at no cost. See Picture.
My total spend should be less than £300. Now for the build.