A bit of a random one...

I have collapsed arches / ankles which I went to the GP about a few years ago after which they sent me to an NHS specialist who provided the cheapest of cheap insoles which perished within one month. I then bought some off-the-shelf insoles which I've been using ever since.

I've threatened many times to have a proper biomechanical assessment by a biomechanics specialist with bespoke orthotics made out of aeroplane or F1 racing car grade this or that. The problem is that I don't really know where to get it done properly. There are various Groupon deals, there's always someone doing a 'trade show rate' at cycling (or insert sport of choice) exhibitions, etc. but typically without the education and qualifications one would expect to see. Then there are bricks and mortar practices with people qualified in a strand of podiatry but I'm unsure whether or not that makes them suitably skilled for biomechanics and custom orthotics.

I'm not after a 'good deal', I want a 'good job' done by some who is skilled and qualified in their craft.

So... does anyone know much about this? Does anyone have any recommendations in the north west?

Any help would be greatly appreciated.