Fair Comment DaveReid !
Thousands indeed ! Probably why they are making it so difficult.
Encouraging me to continue on my longish journey from the Canaries to LHR under false pretences is downright fraudulent in my view !!
Regarding the latter part if your comment Ray_Y, either you did not read my original post, or failed to comprehend !
The steps I took to cover the "special needs" of my wife consisted of finding an airline that flew the route and had seating configuration suitable for her needs and booked 8 months in advance !!
I have done this for the last two long haul flights !!
El G.