UK companies in Doncaster
Doncaster is a South Yorkshire city with a large logistics and warehousing sector alongside construction and trades. 17,434 active companies have their registered office here, and 3,304 new ones were set up in the last twelve months.
Key facts
- 17,434 active companies are registered to a Doncaster post town on the Companies House snapshot of August 2026.
- 3,304 new companies started here in the last twelve months, about 275 a month, and 290 in August 2026.
- The most common code is Other letting and operating of own or leased real estate (SIC 68209), with 907 companies.
- The busiest postcode districts are DN4, DN6, DN1, DN3.
New companies in Doncaster
3,304 new companies were set up with a Doncaster registered office in the last twelve full months, about 275 a month. 290 of them were set up in August 2026. That sits on top of 17,434 active companies already registered here.
What the new ones do: Dormant Company leads, with 484 new companies in the year.
Selling to new Doncaster 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 Doncaster 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 Doncaster companies as leadsThe most registered SIC codes in Doncaster
Counting active companies whose registered office is a Doncaster 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 907 companies. It is worth reading against the sectors below: the authored view is what Doncaster is known for, this is what its companies actually filed.
- 68209Other letting and operating of own or leased real estate907
- 49410Freight transport by road872
- 99999Dormant Company870
- 68100Buying and selling of own real estate740
- 70229Other management consultancy activities (not financial)539
- 82990Other business support service activities n.e.c.448
- 64209Activities of other holding companies n.e.c.442
- 41100Development of building projects365
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 Doncaster
Postcode filter
To target Doncaster on Leadistry, set the postcode prefix filter to:
DN4, DN6, DN1, DN3, DN11, DN5The 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 Doncaster on Companies House
How many companies are registered in Doncaster?
17,434 active companies have a registered office in Doncaster, counted from the Companies House snapshot of August 2026. Dissolved companies are not counted.
How many new businesses start in Doncaster each month?
3,304 new companies were set up in Doncaster in the last twelve full months, about 275 a month. 290 were set up in August 2026.
What do new Doncaster companies do?
The most common code among companies set up in Doncaster in the last year is Dormant Company (SIC 99999), with 484 of them. Next come Freight transport by road and Other letting and operating of own or leased real estate.
How do I reach new Doncaster companies before anyone else?
Set a Leadistry agent to the Doncaster postcode districts (DN4, DN6, DN1) 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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