Newly Formed Companies in
Rumney, Trowbridge, Llanrumney, St Mellons, Castleton, Marshfield
this week
There have been 12 companies formed in the week from 06-10-2026 to 13-10-2026 within the CF3 postcode district (Rumney, Trowbridge, Llanrumney, St Mellons, Castleton, Marshfield in Cardiff). Usually over 2500 companies get formed every working day across the country. If you would prefer to analyse by region, rather than this postal district, you can check how many companies are formed in Cardiff.
The geography of CF3 is anchored by Rumney, Trowbridge, Llanrumney and nearby places such as St Mellons, making the district more specific than the broader postcode area that surrounds it. Taken together, Rumney, Trowbridge, Llanrumney and St Mellons give CF3 a more varied footprint than a single-place district.
For CF3, the local setting is important: Cardiff's districts reflect the role of Wales's capital, with government, universities, sport, media, retail and waterfront regeneration all part of the city's identity.
By company count, CF3 sits around the middle of the national spread, ranked 581st out of 3,113 districts with 2,698 companies as of June 2026. UK company data for CF3 helps connect the named localities with recent company formation activity. For CF3, the company count is best read alongside the named places rather than as a claim about how businesses operate.
Below are just a small sample of the companies formed (with the numeric parts of the address redacted with an X and not showing the postcode, so we are not advertising peoples full addresses online) but allows you to see where some of the companies have been formed. Our newly formed companies wizard in our Dashboard allows you to filter by a range of options free of charge to get an idea of quantities, prior to deciding to purchase. We supply the full company details lodged when they filed their company when you have decided on your filter selection and choose to purchase.
| Incorp Date | Categories | Location |
|---|---|---|
| 12th Oct | Retail sale in non-specialised stores with food, beverages or tobacco predominating | XX Countisbury Avenue Llanrumney Cardiff |
| 12th Oct | Other building completion and finishing | XX Aberdaron Rd Rumney Cardiff |
| 11th Oct | Other transportation support activities | X Exford Crescent Cardiff |
| 9th Oct | Buying and selling of own real estate | Fairway House Links Business Park Fortran Road St. Mellons Cardiff |
| 9th Oct | Licensed restaurants | XX Menai Way Rumney Cardiff |
| 9th Oct | Other specialised construction activities n.e.c. | Fairway House Links Business Park St. Mellons Cardiff |
| 9th Oct | Other specialised construction activities n.e.c. | Fairway House Links Business Park St. Mellons Cardiff |
| 8th Oct | Other specialised construction activities n.e.c. | Fairway House Links Business Park St. Mellons Cardiff |
| 8th Oct | Retail sale via mail order houses or via Internet | XX Harris Avenue Rumney Cardiff |
| 7th Oct | Other retail sale not in stores, stalls or markets | X Ffordd Williamson Old St. Mellons Cardiff |
| 7th Oct | Other letting and operating of own or leased real estate | Fairway House Links Business Park Fortran Road St. Mellons Cardiff |
| 7th Oct | Manufacture of kitchen furniture | Fairway House Links Business Park Fortran Road St. Mellons Cardiff |
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