

0203 numbers are the newest member of the London’s 020 area code family however they have been around since 2000. Covering internal and external areas of the city, 0203 is the popular choice for many businesses.
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500 FREE MINS
6ppm L/line rate thereafter
15ppm Mobile rate thereafter
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Only 99p per month
FREE CONNECTION
99p per month for your 2 month trial then £24.99 per month if you decide to continue with the service. 12 month contract thereafter.
(Limited Time Only)
1000 FREE MINS
6ppm L/line rate thereafter
15ppm Mobile rate thereafter
Web Based Control
Route Calls to UK Landline
Route Calls to UK Mobile
Time of Day Routing
Voicemail2Email
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Inbound minutes chargeable
Web Based Control
Route Calls to UK Landline
Route Calls to UK Mobile
Time of Day Routing
Voicemail2Email
Like to choose from a selection of numbers for this prefix?
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Once you have chosen your 0203, remember – it is also referred to as a geographic telephone number. In other words, it is location specific. Many callers find dialling a geographic business number reassuring, particularly when searching for local services/products. It’s a sure sign to callers that phone numbers beginning with 02 are usually business landline numbers situated in the UK. What’s more, 0203s are categorised as regular landline numbers, therefore charged at just a standard rate (or free when included in provider bundles).
So, to confirm – all numbers beginning with 02, (including those starting with 0203), are the area code covering London and the surrounding area. It’s not only the majority of Greater London that will be covered by the 020 area code. Some adjacent areas just outside the Greater London boundary are also included.
As a general rule, London has three separate dialling codes – 020 8 is generally for outer London and 020 7 for inner London. What about the 020 3 code? Well, 020 3 code was introduced as 020 7 and 020 8 codes were beginning to run out and so that prefix covers the inner and outer region.
The 020 area code is optional if dialling from a London-based landline – just the eight digit local phone number is needed.
When displaying or writing London phone numbers, the correct format is 020 3XXX XXXX.
Not at all, any company in any industry is able to use an 020 3 number.
As 020 3 numbers are landline numbers, they are charged at ‘standard rate’. Costs can vary slightly depending on what time of day calls are made and from which service provider. Many mobile contracts include 02s in free minutes or monthly contract bundles.
More than a number
Alongside being your business’ phone number, your new 0203 is also an extension of your brand and an invaluable marketing tool. That’s why choosing a number which looks great and rolls off the tongue (with a memorable number sequence) is a great addition to your company.
To speak to us directly please call 0330 332 0400. We’re here 7-days a week, and always happy to help.
You can also email us at any time on support@numbersupermarket.co.uk
Got more questions about 0203 numbers? We’ve put together guides that should answer most of your queries.