UK companies in Portsmouth
Portsmouth is an island city on the Hampshire coast, with naval, marine and defence-linked firms alongside hospitality. 9,261 active companies have their registered office here, and 1,316 new ones were set up in the last twelve months.
Key facts
- 9,261 active companies are registered to a Portsmouth post town on the Companies House snapshot of August 2026.
- 1,316 new companies started here in the last twelve months, about 110 a month, and 98 in August 2026.
- The most common code is Other letting and operating of own or leased real estate (SIC 68209), with 678 companies.
- The busiest postcode districts are PO6, PO1, PO3, PO2.
New companies in Portsmouth
1,316 new companies were set up with a Portsmouth registered office in the last twelve full months, about 110 a month. 98 of them were set up in August 2026. That sits on top of 9,261 active companies already registered here.
What the new ones do: Other letting and operating of own or leased real estate leads, with 83 new companies in the year.
Selling to new Portsmouth 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 Portsmouth 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 Portsmouth companies as leadsThe most registered SIC codes in Portsmouth
Counting active companies whose registered office is a Portsmouth 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 678 companies. It is worth reading against the sectors below: the authored view is what Portsmouth is known for, this is what its companies actually filed.
- 68209Other letting and operating of own or leased real estate678
- 68100Buying and selling of own real estate341
- 70229Other management consultancy activities (not financial)304
- 82990Other business support service activities n.e.c.294
- 64209Activities of other holding companies n.e.c.272
- 41100Development of building projects247
- 98000Residents property management241
- 43999Other specialised construction activities n.e.c.196
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.
Dominant sectors in Portsmouth
Postcode filter
To target Portsmouth on Leadistry, set the postcode prefix filter to:
PO6, PO1, PO3, PO2, PO5, PO4The 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.
About Portsmouth on Companies House
How many companies are registered in Portsmouth?
9,261 active companies have a registered office in Portsmouth, counted from the Companies House snapshot of August 2026. Dissolved companies are not counted.
How many new businesses start in Portsmouth each month?
1,316 new companies were set up in Portsmouth in the last twelve full months, about 110 a month. 98 were set up in August 2026.
What do new Portsmouth companies do?
The most common code among companies set up in Portsmouth in the last year is Other letting and operating of own or leased real estate (SIC 68209), with 83 of them. Next come Retail sale via mail order houses or via the internet and Activities of other holding companies n.e.c..
How do I reach new Portsmouth companies before anyone else?
Set a Leadistry agent to the Portsmouth postcode districts (PO6, PO1, PO3) 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.
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