Thank you all, talking here always helps give you a boost!
Today was a pretty miraculous day to be honest, I had my first appointment with Wheelchair services and my GP had warned me upfront that I should look at what charity was available as they generally wiggled out of providing chairs. It kind of proved it was time really, as despite the form warning of a minimum hour appointment and a 6-10 week wait for a chair - we arrived and within a few minutes he was explaining to Rob about all the adjustments that could be made etc. So 25 mins after the appointed time, we were already in the car on our way home with a chair in the boot I suspect it helped that I didn’t anything hi-tech, just a manual chair.
They were also very happy to accept my cheap and cheerful effort, they said they’d service it and it’d be used on a ward so that was a good feeling too. My bladder is delighted that I now have a comfy seat that fits me.