Call Protect: Format of VIP numbers

[#1]

I've turned on blocking of international numbers and want to enter some VIP exceptions. One example is for a Gothenberg number in Sweden where I initially entered:

46 31 XXXXXX

However, the system said that it only accepts numbers starting with a zero. So do I just add 0 to the above or two 0's or what?

Does this also apply to Swedish mobile numbers?

[#2]

Would assume you add the two 0's to recognise the incoming number as you have to enter the area code with UK.

[#3]

I'd agree with mort - when I get a call from Ireland the caller display says 00353xxxxxxxx, the same format as I would use to call them.