Can any UK business apply for a 0151 number?

Yes, and so can a business outside the UK. Ofcom’s National Telephone Numbering Plan allows a geographic number to be assigned outside its area when the business has asked for that area code and callers pay the normal rate for it. The number registers on your own business address, which can be anywhere in the UK or abroad, so a company in Manchester, Leeds or London can publish a 0151 number for its Merseyside customers without an office on Merseyside. CallFactory checks your business details before the line goes live.

Do Birkenhead, Bootle and Huyton share the same 0151 as central Liverpool?

Yes. The 0151 area spans both sides of the Mersey: the city of Liverpool, Bootle, Crosby, Maghull and Litherland on the Sefton south side, Huyton, Kirkby, Prescot and Halewood in Knowsley, Birkenhead, Wallasey, Hoylake, West Kirby, Heswall, Bebington, Bromborough, Ellesmere Port and Neston across the Wirral, plus Widnes in Halton. A business in any of these places receives a full 0151 number rather than a separate suburban code.

Why doesn't St Helens fall under 0151 when it sits in the Liverpool City Region?

St Helens has its own 01744 area code because the 0151 numbering area was drawn around the Liverpool and Birkenhead exchanges rather than the full Liverpool City Region administrative boundary. The same applies to Southport (01704), Formby (01704), Runcorn (01928), Warrington (01925) and Chester (01244), all of which sit close to Liverpool geographically but on a separate Ofcom code. Businesses registered there should apply for the relevant local code or pair a regional number with a national 0333 line for UK-wide reach.

Are 0151 numbers still available or has the prefix filled up?

Stock is healthy. The 0151 area covers the full 0151 200 0000 to 0151 999 9999 range and Ofcom continues to allocate fresh blocks to operators on demand. Ordinary 0151 numbers activate within one working day. Memorable digit patterns (consecutive digits, mirror sequences, postcode matches) move faster than in less densely populated areas because Merseyside has one of the highest business call densities in north-west England after Greater Manchester.

What if my business is outside the 0151 area but most of my customers are in Liverpool?

A 0151 number fits that situation well, because it needs no Merseyside address. Your Liverpool customers call a local number at the normal rate, and the calls ring through to your team wherever it sits. A national 0333 number gives you UK-wide reach at standard geographic call rates. A freephone 0800 line works for sales hotlines and marketing campaigns where the call cost should sit with you rather than the caller. Both can run alongside a 0151 number on the same account.

0151 Area Code | Which Towns It Covers

Area code 0151 identifies Liverpool and the Wirral, and callers on both banks of the Mersey read a 0151 number on a website, an invoice or a Google Business Profile as a Liverpool line. You do not need an office on Merseyside to use that signal, because Ofcom’s National Telephone Numbering Plan lets a business outside the area take a 0151 number as long as it asked for that code and callers pay the normal rate for it. For companies expanding into the region, restructuring after a merger or moving a head office, it pays to know precisely which towns sit inside the 0151 area and which sit just outside.

This article maps the 0151 coverage in detail, explains what Ofcom’s numbering plan says about who can hold the prefix, and walks through what you need to order a number. From there, applying for a 0151 number for your Liverpool business becomes a predictable exercise.

Which towns does the 0151 area code cover?

The 0151 area covers the Liverpool and Birkenhead conurbation across both banks of the Mersey, together with the Knowsley and south Sefton boroughs and the Wirral peninsula. The principal centres inside the area:

Liverpool city centre — the central business district around Castle Street, Old Hall Street and the commercial core through Liverpool ONE, plus the Pier Head waterfront, the Knowledge Quarter through Mount Pleasant and the Baltic Triangle creative cluster
North Liverpool — Everton, Kirkdale, Vauxhall, Anfield and Walton, including the Liverpool FC stadium and the Stanley docks regeneration corridor
South Liverpool — Dingle, Toxteth, Aigburth, Sefton Park, Mossley Hill and Allerton, with Liverpool John Lennon Airport at Speke and the Garston industrial estate
East Liverpool — Wavertree, Kensington, Edge Hill, Old Swan, Tuebrook and Stoneycroft, covering the University of Liverpool Knowledge Quarter and the technology park at Wavertree
Outer east Liverpool — Childwall, Belle Vale, Gateacre, Woolton and Hunts Cross, the suburban professional belt running towards the Knowsley boundary
North-east suburbs — West Derby, Norris Green, Croxteth, Fazakerley and Aintree, including Aintree University Hospital and the racecourse
Bootle, Litherland and Seaforth — Sefton south on 0151, covering the Seaforth Container Terminal and the Bootle professional centre that hosts HMRC and Hugh Baird College
Crosby, Waterloo and Blundellsands — the coastal residential belt north of the Mersey on 0151
Maghull and Lydiate — north Sefton on 0151, on the boundary with the 01704 Southport area
Huyton, Roby, Knowsley Village and Stockbridge Village — Knowsley borough on 0151, including the Knowsley Industrial and Business Park
Kirkby and Tower Hill — north Knowsley on 0151, with the KIBP North logistics estate
Prescot, Whiston and Rainhill — east Knowsley on 0151, on the boundary with St Helens
Halewood and Tarbock — south Knowsley on 0151, including the Jaguar Land Rover plant at Halewood
Birkenhead, Tranmere, Rock Ferry and Prenton — Wirral east on 0151, opposite the Pier Head across the Mersey
Wallasey, New Brighton, Liscard, Seacombe and Egremont — Wirral north on 0151, the north Wirral coast and the Wallasey town centre
Hoylake, West Kirby, Meols, Moreton and Leasowe — Wirral west on 0151, the Dee estuary coast
Heswall, Pensby, Thingwall, Irby and Greasby — Wirral central on 0151, the professional commuter belt
Bebington, Bromborough, Eastham, Port Sunlight and Spital — Wirral south on 0151, including the Bromborough industrial corridor along the A41
Neston, Parkgate, Willaston and Little Neston — far south Wirral on 0151
Ellesmere Port, Whitby, Sutton and Stanlow — Cheshire West on 0151, covering the Vauxhall plant, the Stanlow refinery and the Ellesmere Port industrial belt
Widnes, Hough Green and Cronton — Halton on 0151, on the north bank of the Mersey by the Silver Jubilee Bridge

Callers in every one of these places recognise a 0151 number as a Liverpool line and pay the normal geographic rate to reach it. Your own office does not have to sit inside this footprint, because the number registers on your business address wherever that is, in the UK or abroad.

Why the geographic rule exists

UK area codes were designed so that the leading digits of a phone number tell the caller, and the caller’s billing system, which part of the country the line sits in. A 0151 says: this line belongs to Liverpool and the Wirral. A 0161 says: Manchester. A 020 says: London. The numbering plan does not, however, require the business behind the number to be in Merseyside. Clause B3.1.1 of Ofcom’s National Telephone Numbering Plan, headed “Out of Area use of Geographic Numbers”, allows a geographic number to be assigned to a subscriber outside the area, provided the subscriber asked for a number with that area code and calls to it are charged in line with calls to any other number with that code.

In practice a 0151 number is open to your business whether your office is on Merseyside, in another UK city or outside the UK. You ask for the code by choosing a 0151 number, and callers pay the normal rate for a Liverpool number, so both conditions are met from the start. The number registers on your own business address wherever that is, and CallFactory checks your business details before the line goes live, in line with Ofcom’s guidance that providers confirm a customer is a genuine business.

That makes the UK more open than many continental European markets, where a local geographic number often requires an address inside the numbering zone. A Liverpool firm, a Manchester company that wins customers on Merseyside and an overseas business entering the British market can all publish a 0151 number, and in each case Liverpool customers call a local line while the calls ring through to the team wherever it sits.

Boundary cases around Liverpool

The Liverpool City Region administrative boundary extends beyond the 0151 numbering area, which means several well-known towns inside the city region in fact sit on a different code. The main cases:

St Helens, Newton-le-Willows, Rainford and Haydock — north-east, area code 01744. St Helens kept its own pre-1995 code through every reform, even though it became part of Merseyside metropolitan county in 1974 and joined the Liverpool City Region in 2014
Southport, Birkdale, Ainsdale and Churchtown — north Sefton, area code 01704. Southport runs on its own code together with Formby and Hightown, even though Sefton is administratively one Merseyside borough
Formby and Hightown — central Sefton, area code 01704. Formby sits on the 01704 range with Southport, not on 0151 with Bootle and Crosby
Runcorn, Frodsham and Helsby — Halton south, area code 01928. Runcorn sits on the south bank of the Mersey opposite Widnes but uses a separate code, even though Halton borough is administratively one unit
Warrington, Lymm, Stockton Heath and Burtonwood — east, area code 01925. Warrington borders Halton and St Helens but anchors its own numbering area on the Mersey
Chester, Hawarden, Saughall and Mickle Trafford — south, area code 01244. Chester runs on its own code, with Hawarden across the Welsh border also on 01244
Wrexham, Buckley and Mold — south-west across the Welsh border, area codes 01978 for Wrexham and 01244 for Hawarden and the Mold edge
Ormskirk, Skelmersdale and Burscough — north-east into Lancashire, area code 01695. The West Lancashire boundary sits just north of Maghull
Wigan, Leigh and Ashton-in-Makerfield — east into Greater Manchester, area code 01942. The Greater Manchester boundary runs through the M6 corridor east of St Helens

These boundary cases matter for two reasons. First, callers judge a number by its code rather than by the map, so a business whose customers sit in St Helens or Southport reaches them better with 01744 or 01704 than with 0151. Second, they map cleanly onto a multi-site structure: a St Helens head office can keep its 01744 line while a Liverpool branch carries a separate 0151, with both routed through the same CallFactory account so that callers and staff treat them as one phone system.

How the 0151 area grew historically

Liverpool’s numbering history runs in parallel to London’s, Birmingham’s, Glasgow’s, Edinburgh’s and Manchester’s, because the six Director cities ran out of subscriber capacity earlier than the rest of the country. The original Liverpool code was 051 from 1968 onwards, after the city moved off the Director system that had used letter-prefix codes through the 1950s and 1960s. PhONEday in April 1995 reshaped the UK numbering map by adding a leading “1” to most STD codes, and Liverpool received the new 0151 code at the same time as Glasgow (0141), Edinburgh (0131), Birmingham (0121), Manchester (0161) and the rest of the Director cities. Unlike London, Liverpool did not need a subsequent split, because the 0151 range had enough subscriber capacity to absorb the rising demand of the 1990s and 2000s without requiring a second code.

The 0151 area was drawn around the Liverpool and Birkenhead exchanges plus the immediate Wirral, Knowsley and south-Sefton commuter belt, rather than the full Merseyside metropolitan county boundary. That is why St Helens and Southport kept their own codes through every reform, and why the 1995 boundary picked up the Wirral peninsula in full alongside Liverpool while leaving Halton split between Widnes on 0151 and Runcorn on 01928. The 0151 numbering area covers roughly 1.4 million people across the conurbation, which makes it one of the largest English area codes by population. New numbering blocks continue to be released as needed, and Number Portability since 1997 means a Liverpool business that moves provider keeps its existing 0151 line without losing its identity.

How to apply for a 0151 number

Ordering a 0151 number takes a few minutes, and none of the steps depends on where your office is:

Choose your number. Pick an ordinary 0151 number or a memorable digit pattern. No Liverpool office, branch or serviced address is needed for either.
Give your business details. Enter your company name and business address. The number registers on that address, which can be anywhere in the UK or abroad, so a registered office in Chester, a head office in London and a company address outside the UK are all accepted.
Submit the application. CallFactory checks your business details at the point of order, holds the number while the verification clears (typically the same morning) and activates the line within one working day.

Edge cases come up frequently. A London company that wins customers on Merseyside can publish a 0151 number without opening an office there, and keep the same number if it later takes space on Castle Street. A move from Aigburth to West Kirby does not require a new number, because porting keeps the existing 0151 in place. A multi-site business with several Merseyside locations can put each branch on its own 0151 sequence and route them all through one CallFactory call flow, which means a single team handles the whole estate without callers noticing.

If your business is outside the 0151 area

A business outside the 0151 area can still take a 0151 number, because it registers on your own business address wherever that is. When your callers are not in Liverpool or on the Wirral, another number can fit better. The fit depends on whether you want a regional identity, a national presence or a freephone hotline.

A neighbouring local code — 01744 for St Helens, 01704 for Southport and Formby, 01928 for Runcorn, 01925 for Warrington, 01244 for Chester, 01695 for Ormskirk and Skelmersdale, and 01942 for Wigan. Useful for businesses that genuinely belong to a neighbouring borough and want a recognisable local identity rather than a Liverpool claim
A national 0333 number — 0333 number charged at standard geographic call rates regardless of where the caller dials from. Suits operators with a UK-wide remit who want one published line for every region
A freephone 0800 line — 0800 freephone number where the caller pays nothing and the cost sits with the business. The classic fit for sales hotlines, customer-service campaigns and inbound marketing
A national overview — the UK phone-numbers overview lays out every range Ofcom administers, with guidance on which one suits each commercial profile

The right alternative depends on where you want the brand to sit. A regional code reads as authentically local; a 0333 reads as nationally credible; a 0800 prioritises caller convenience over geographic identity. The full feature set, monthly cost and contract terms across all of them are listed on the pricing page.

Get started

If you want a 0151 line live this week, apply through the Liverpool 0151 number page. CallFactory checks your business details, holds the number for you and activates the line within one working day, complete with call forwarding to a mobile or landline, a text-to-speech welcome message in any language and call recording for compliance and training.

The same order works for a Liverpool firm, for a company elsewhere in the UK that serves customers on Merseyside and for a business outside the UK, because the number registers on your own business address wherever it is. If your customers are spread across the whole country, a 0333 national number covers them with one line, and it pairs neatly with a 0151 number for the Liverpool market.

Which towns does the 0151 area code cover and what it means for your business