If you want a detailed look at the UK dialling codes then you might find this useful:
https://en.wikipedia.org/wiki/List_of_dialling_codes_in_the_United_Kingdom
I'm honoured that you want me to have a look at your next project.
I've uploaded my new scenario to my page! It's called PALEFLESH, it's set in London in the 80s and therefore I've probably made like a million snafu's. I'd be interested to hear what you think :)
