Are 0203 numbers free to call on Vodafone?

Essentially 0203 numbers are free to call on Vodafone only if you have inclusive minutes remaining on your balance.

0203 numbers generally belong to local residents and businesses within Greater London, however it is possible to register these from outside the conventional area. They are charged at identical rates as other 02 numbers as well as local 01 numbers and national non-geographic 03 helplines.

Detailed cost breakdown of phoning 0203 numbers on Vodafone