You can only phone 0203 numbers for free if you have inclusive minutes remaining on your landline or mobile tariff, otherwise you will have to pay your provider a per-minute rate plus an access charge as outlined in their terms.
Local numbers which start with 0203 prefixes are typically registered to personal and business addresses in the UK capital city of London, however you should note that there can be exceptions to this. If you have inclusive minutes remaining on your mobile tariff or your landline package stipulates the use of free calls then you can phone 0203 numbers for free. However if you have neither of these allowances you will be charged a per-minute rate as well as an access charge – these are both normally more expensive for mobile customers compared to calls made from a landline.
Cost of phoning 0203 numbers from a UK mobile (pay as you go)
- Cost of calling 0203 numbers on O2 Pay & Go: customers on Telefonica’s UK brand will pay 30p per minute to call 0203 telephone numbers as well as a 30p access charge.
- EE call costs for 0203 numbers: EE customers currently pay 30p per minute to call 0203 numbers however the first minute of the call will cost 74p due to a 44p connection charge.
- Calling 0203 numbers on Vodafone pay as you go will cost you 60p in the first minute of the call then 30p for each minute thereafter.