Firstly, thank you for offering help Darren, Karen.
I’ve done it and all is ok. It took me two hours and is not that easy. Poll, I can’t justify getting the door fitter back in - he was about 5 and was charging me a few hundred plus some preposterous call out charge. And Darren, it wasn’t the allen key, if only!
And Karen, there was nothing on YouTube for this job, just plenty of things telling you how to save fortunes but of no actual help whatsoever!
I couldn’t believe that a front door could be so complex. There are rollers and drawlinks and spring loaded things which spring out when released. Anyway, it’s done and next time I know what to do. There are screws in the vertical rails and some machine screws too, all of which have to come off. There are lots of potential problems and you must think outside the box. I even considered getting a locksmith home but I don’t give in easily. And then, when you finally get the handles off, it’s just a small screw that is the culprit. Pat, if your door is Safestyle like mine I suspect you could probably unscrew the handles alone from inside which would make it much easier. I undid the whole shebang of course as a drawlink had dropped.
It’s up to you of course Pat but I would only consider doing it if you are used to diy things.