Skip to content
LeadistryLive public record
Log inGet 25 free leads
MenuClose
Menu
Product10+
The DeskYour replies, results and what to do nextAgentsTell them who you sell to. They find the companiesTemplateYour email, with your logo, pictures and videoThe FeedNew companies each morning, the email writtenLeadsEvery lead, with their email, website and socialsMailbox and warm-upSends from your own email, a few a day at firstWhy nowThe dated reason behind every leadAppsGoogle Sheets, Zapier, Make and SlackChrome extensionLook up any company from its websiteConnect ClaudeRun Leadistry from your own Claude
Who it's for15+
Founders & ownersLeads before your first sales hireSales repsMornings on selling, not on listsAgency ownersFind the firms whose website is letting them downMarketing teamsLists that top themselves upAll fifteen rolesBrowse the full index
PricingFrom £29 a month, priced per lead›
Insights4+
Field notesPlain-English help with UK outboundMethodologyWhere the data comes from, and proofCompareNamed, sourced comparisonsWord listThe UK filing terms, explained
Get 25 free leads
Get 25 free leads
Companies House · Southampton

UK companies in Southampton

Southampton is a port city on the Hampshire coast, with shipping, logistics, marine and retail firms. 22,660 active companies have their registered office here, and 3,231 new ones were set up in the last twelve months.

At a glance

Key facts

  • 22,660 active companies are registered to a Southampton post town on the Companies House snapshot of August 2026.
  • 3,231 new companies started here in the last twelve months, about 269 a month, and 241 in August 2026.
  • The most common code is Other letting and operating of own or leased real estate (SIC 68209), with 1,135 companies.
  • The busiest postcode districts are SO14, SO15, SO31, SO16.
Measured

New companies in Southampton

3,231 new companies were set up with a Southampton registered office in the last twelve full months, about 269 a month. 241 of them were set up in August 2026. That sits on top of 22,660 active companies already registered here.

Sept 25: 306Oct 25: 332Nov 25: 270Dec 25: 210Jan 26: 284Feb 26: 270Mar 26: 309Apr 26: 299May 26: 242Jun 26: 219Jul 26: 249Aug 26: 241
Sept 25 to Aug 26. Companies still on the register, counted from the Companies House snapshot.

What the new ones do: Retail sale via mail order houses or via the internet leads, with 179 new companies in the year.

  1. 47910Retail sale via mail order houses or via the internet179
  2. 68209Other letting and operating of own or leased real estate140
  3. 68100Buying and selling of own real estate137
  4. 62012Business and domestic software development103
  5. 49410Freight transport by road96
For agencies and suppliers

Selling to new Southampton companies

A company in its first months is still choosing who it works with. Reaching it then, with a short email that names what it has just started, is often the easiest time to win them as a client.

  • Marketing agenciesA new company needs a website, a logo and its first customers, usually before it has picked anyone to help.
  • AccountantsEvery new company owes a first set of accounts and a confirmation statement, and many have no accountant yet.
  • IT and software firmsEmail, devices and security get set up in the first months, and the choices made then tend to stick.
  • Insurance brokersEmployers' liability, professional indemnity and van cover are bought early, often in a hurry.
  • RecruitersThe first hires come quickly once a new company wins work.

Leadistry reads the new Southampton registrations every morning, keeps the ones with a working website and a real email, and writes the first email for you to approve. The first 25 leads are free.

Get new Southampton companies as leads
Measured

The most registered SIC codes in Southampton

Counting active companies whose registered office is a Southampton post town, these are the codes that come up most often on the August 2026 Companies House snapshot. Other letting and operating of own or leased real estate leads with 1,135 companies. It is worth reading against the sectors below: the authored view is what Southampton is known for, this is what its companies actually filed.

  1. 68209Other letting and operating of own or leased real estate1,135
  2. 68100Buying and selling of own real estate915
  3. 98000Residents property management802
  4. 70229Other management consultancy activities (not financial)763
  5. 82990Other business support service activities n.e.c.610
  6. 47910Retail sale via mail order houses or via the internet556
  7. 49410Freight transport by road514
  8. 64209Activities of other holding companies n.e.c.479

Pick a code, then narrow by postcode and date. Every company you pull carries a working website and a real email, and we never charge for the ones we cannot complete.

Why do these counts add up to more than the total?

A company may register up to four SIC codes and these counts include every position, so a business filed under two of them appears twice.

Where the volume sits

Dominant sectors in Southampton

SIC 68209, Other letting and operating of own or leased real estateView SIC 68209→
1,135 active companies in Southampton
SIC 68100, Buying and selling of own real estateView SIC 68100→
915 active companies in Southampton
SIC 98000, Residents property managementView SIC 98000→
802 active companies in Southampton
SIC 70229, Other management consultancy activities (not financial)View SIC 70229→
763 active companies in Southampton
SIC 82990, Other business support service activities n.e.c.View SIC 82990→
610 active companies in Southampton
Search recipe

Postcode filter

To target Southampton on Leadistry, set the postcode prefix filter to:

SO14, SO15, SO31, SO16, SO40, SO19

The search returns companies with a registered office in any of these postcode areas. Add a SIC code filter from the table above to narrow by sector.

Answers

About Southampton on Companies House

How many companies are registered in Southampton?

22,660 active companies have a registered office in Southampton, counted from the Companies House snapshot of August 2026. Dissolved companies are not counted.

How many new businesses start in Southampton each month?

3,231 new companies were set up in Southampton in the last twelve full months, about 269 a month. 241 were set up in August 2026.

What do new Southampton companies do?

The most common code among companies set up in Southampton in the last year is Retail sale via mail order houses or via the internet (SIC 47910), with 179 of them. Next come Other letting and operating of own or leased real estate and Buying and selling of own real estate.

How do I reach new Southampton companies before anyone else?

Set a Leadistry agent to the Southampton postcode districts (SO14, SO15, SO31) and the trades you sell to. Each morning it finds the new companies that match, checks each one has a working website and a real email, and writes the first email for you to read and approve.

Nearby and related cities: Brighton and Hove · Milton Keynes · Oxford · Portsmouth · Norwich · Belfast · Bradford · Cambridge · Every UK city

Companies House · Southampton

Find Southampton leads

25 free leads. No credit card. Cancel any time.

Start free trial →

✓ No card  ·  ✓ 25 free leads  ·  ✓ Cancel anytime