UK companies in Swansea
Swansea is a coastal city in south Wales, with manufacturing, education and a growing digital sector. 12,078 active companies have their registered office here, and 1,686 new ones were set up in the last twelve months.
Key facts
- 12,078 active companies are registered to a Swansea post town on the Companies House snapshot of August 2026.
- 1,686 new companies started here in the last twelve months, about 141 a month, and 123 in August 2026.
- The most common code is Other letting and operating of own or leased real estate (SIC 68209), with 920 companies.
- The busiest postcode districts are SA1, SA7, SA4, SA2.
New companies in Swansea
1,686 new companies were set up with a Swansea registered office in the last twelve full months, about 141 a month. 123 of them were set up in August 2026. That sits on top of 12,078 active companies already registered here.
What the new ones do: Other letting and operating of own or leased real estate leads, with 116 new companies in the year.
Selling to new Swansea 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 Swansea registrations all day, keeps the ones with a working website and a real email, and writes the first email for you to approve. 100 free leads the moment you sign up, with no card: 50 now and 50 more as their reasons appear. Each shows the company, its email, the director's name, its website and why to get in touch now. Buy your first plan and 400 more leads come free, worth £31. Addresses, phone numbers and social pages show once you buy.
Get new Swansea companies as leadsSee 3 Swansea companies
Choose who you sell to. These are real companies, shown before you sign up.
The most registered SIC codes in Swansea
Counting active companies whose registered office is a Swansea 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 920 companies. It is worth reading against the sectors below: the authored view is what Swansea is known for, this is what its companies actually filed.
- 68209Other letting and operating of own or leased real estate920
- 68100Buying and selling of own real estate585
- 70229Other management consultancy activities (not financial)369
- 41100Development of building projects320
- 82990Other business support service activities n.e.c.298
- 47910Retail sale via mail order houses or via the internet240
- 64209Activities of other holding companies n.e.c.239
- 96090Other service activities n.e.c.224
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 Swansea
How Swansea is counted
A company counts for Swansea on this page when its registered office is in one of these postcode areas:
SA1, SA7, SA4, SA2, SA3, SA6To find companies here on Leadistry, tell an agent you sell in Swansea and say what you sell. It chooses the kinds of business for you and shows them before it starts. The sector table above shows which trades are busiest.
About Swansea on Companies House
How many companies are registered in Swansea?
12,078 active companies have a registered office in Swansea, counted from the Companies House snapshot of August 2026. Dissolved companies are not counted.
How many new businesses start in Swansea each month?
1,686 new companies were set up in Swansea in the last twelve full months, about 141 a month. 123 were set up in August 2026.
What do new Swansea companies do?
The most common code among companies set up in Swansea in the last year is Other letting and operating of own or leased real estate (SIC 68209), with 116 of them. Next come Buying and selling of own real estate and Retail sale via mail order houses or via the internet.
How do I reach new Swansea companies before anyone else?
Set a Leadistry agent to the Swansea postcode districts (SA1, SA7, SA4) 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: Cardiff · Newport · Wrexham · St Asaph · Exeter · Oxford · Plymouth · Salford · Every UK city
Find Swansea leads
Tell us who you sell to. Leadistry finds Swansea companies that match, each with a working website and a real email. 100 free leads the moment you sign up, with no card: 50 now and 50 more as their reasons appear. Each shows the company, its email, the director's name, its website and why to get in touch now. Buy your first plan and 400 more leads come free, worth £31. Addresses, phone numbers and social pages show once you buy.