I haven't checked, but I'll bet there's more IMC holders in the UK than FAA/IR holders...
There must be, and I was one of them for several years myself, but few of them will have a TSO129 GPS installation, with the approaches enabled. No need to for en route ops, so why should they?
That fact has been comprehensively answered elsewhere
Can you post a URL? There is a limit to how many pilot forums one can read, and get some work done
