National 03 Numbers
National 03 numbers (0300, 0330, 0345 and 0370) give you one memorable, geography-neutral customer number that always costs the caller the same as a local call and counts towards their inclusive minute bundle.

About national 03 numbers
The 03 range was introduced by Ofcom as a public-service alternative to 08 numbers. Calls to 03 numbers cost the caller no more than a standard geographic (01/02) call and, crucially, are included in inclusive-minute bundles on landline and mobile packages.
That inclusive treatment is regulated - providers cannot exclude 03 numbers from bundles - which makes 03 the safest choice for customer-facing lines where cost-to-caller trust matters (support desks, appointment lines, membership services).
0300 is reserved for public bodies and not-for-profits (Ofcom eligibility check applies). 0330, 0345 and 0370 are open to any UK business. We hold direct allocations across all four and can reserve memorable patterns where available.
Routing is identical to any other Telappliant number - IVR, hunt groups, AI receptionist, call recording, disaster-recovery redirection and reporting all work the same way.
What's included
The capabilities included as standard with this service.
Full 0300, 0330, 0345 and 0370 allocations
Inclusive-minute treatment guaranteed by Ofcom
Reserve memorable digit patterns where available
Time-of-day, IVR and DR routing built in
Full porting from other providers with no service gap
Central reporting across national and geographic lines
Where this fits
Common scenarios where this service delivers measurable value.
Support and help desks
One national number for every customer, wherever they call from.
Appointment lines
Bookings teams for clinics, professional services and public bodies (0300).
Membership services
Trade bodies, charities and clubs wanting inclusive-cost callback numbers.
Multi-site consolidation
Replace dozens of local numbers with one national entry point.
Common questions
Talk to us about national 03 numbers
A short call, no obligation.
Talk to a UK technology partner who's done this for 20 years
Book a practical, no-pressure consultation. We'll review your current setup, show where AI communications, cloud telephony or managed IT could improve customer experience and reduce admin - and tell you straight if you don't need us.
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