Same cost as an 01 or 02 or 03 landline number. The cost of calling 0300 and 0333 numbers is the same as calling standard landline numbers (01 or 02 numbers). This means that callers will not incur any additional charges for calling an 0300 or 0333 number, regardless of where they are located in the UK. If you have the Unlimited UK Calls Boost then the 03 numbers are included as free calls for up to 60 minutes.
