In article you write:
I've been told by a UK carier that eleven digit numbers beginning 09
> are in use in Canada and diallable by the public - 1 09x xxx xxxx y.
Your carrier is quite mistaken. Canada is tightly integrated into the NANP and has the same NXX-NXX-XXXX phone numbers as the US and the small NANP countries.
As far as I'm aware, although the 09 number space /is/ used, it is
> only for internal network routing purposes and even then will still
> only contain ten digits.
You can see the actual area codes and dialing plan in use at
R's,
John