Well it looks like trust Ford can’t be trusted, because they said the key fob was fine, but while away, I used Allen Ford in Kettering and rather than wait till I go back they suggested just trying a new battery in my dead spare key fob because they thought IT WAS the key fob and if that doesn’t work bring it back on Tuesday.
My new work mate who is also a mechanic suggested this as well and said the time you have to change the battery after one dies isn’t as small as people think.
So I put a new battery in my long dead key fob (7 years old with the original battery) and hey presto it worked.
Because trust Ford said the key fob was fine I was going to start ripping the interior to bits to find the receiver. Another lesson learnt I guess.
btw I bought the car from Trust Ford, but it’s been trouble free, although they did make a mess of my discs and pads, but they did all 4 again free of charge and provided a curtesy car. So I let them off then 🤔