Chris Dent submitted this idea :
> itsniall wrote:
>> When did 0203 numbers come into use?
>
> According to Ofcom's codelist, the first CP allocations were in May 2005.
>
> Thanks to all who pointed out that London is 020, is why I pointed out they
> were (0+)2+8. But for Virginmedia they seem to be "National Dialing Only".

They probably think the area code is 4 digits.