Security guarding companies to acquire in Cardiff
Updated 9 November 2026
Looking to acquire a security guarding company in Cardiff? Firmbase ranks 29 security guarding companies using public company information to help buyers prioritise firms for research and potential outreach. The Approach Score ranks firms using public signals including director age and tenure, ownership, business scale, financial strength and recent changes. These firms are not listed for sale, and the ranking does not indicate that an owner is considering a sale.
The median firm has 15 staff and has been in business for 9 years. Looking beyond Cardiff? Explore the full Wales list of security guarding companies.
29
Firms
UK 1,388
27%
Every director 55+
UK 19%
62%
Held 75%+ by one person
UK 60%
9
Median years in business
UK 8
15
Median headcount
UK 14
£500k to £1m
Median turnover band
UK £250k to £500k · includes our estimates
The first 25 firms, in Approach Score order
| Rank | Firm | Approach Score | The facts behind the score |
|---|---|---|---|
| 1 | Dario Security Cardiff | Approach Score 78/100 |
More about this firm
Company no. 11251542 · Companies House |
| 2 | Steve Murray Consulting Cardiff | Approach Score 74/100 |
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Company no. 12777342 · Companies House |
| 3 | Safestyle Security Cardiff | Approach Score 64/100 |
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Company no. 04235179 · Companies House |
| 4 | Stonefell Treherbert | Approach Score 64/100 |
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Company no. 14290523 · Companies House |
| 5 | Elite Static Security Newport | Approach Score 64/100 |
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Company no. 10826181 · Companies House |
| 6 | Goldcrest Security (services) Cymru Cardiff | Approach Score 63/100 |
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Company no. 07709588 · Companies House |
| 7 | K9 Protection Newport | Approach Score 62/100 |
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Company no. 07699298 · Companies House |
| 8 | Eagel ONE Security Cardiff | Approach Score 60/100 |
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Company no. 12141943 · Companies House |
| 9 | Chamberlains Security (cardiff) Cardiff | Approach Score 59/100 |
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Company no. 05618417 · Companies House |
| 10 | JAR Site Solutions Cardiff, Caerphilly | Approach Score 57/100 |
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Company no. 10899321 · Companies House |
| 11 | Specialist Security Cardiff | Approach Score 56/100 |
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Company no. 04213022 · Companies House |
| 12 | Aegis Vaults Cardiff A director sits on 4 or more companies | Approach Score 55/100 |
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Company no. 13859360 · Companies House |
| 13 | Rubicon Facilities Management Cardiff A director sits on 4 or more companies | Approach Score 55/100 |
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Company no. 09840745 · Companies House |
| 14 | Siteguard Security Cardiff | Approach Score 52/100 |
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Company no. 14129725 · Companies House |
| 15 | Navigation Security Mountain ASH A director sits on 4 or more companies | Approach Score 52/100 |
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Company no. 05661550 · Companies House |
| 16 | 168 Security Cardiff, Hertfordshire A director sits on 4 or more companies | Approach Score 50/100 |
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Company no. 07967784 · Companies House |
| 17 | SGD Guarding Cardiff, South Glamorgan A director sits on 4 or more companies | Approach Score 50/100 |
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Company no. 09069117 · Companies House |
| 18 | WPY Hengoed | Approach Score 45/100 |
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Company no. 13888443 · Companies House |
| 19 | MT5 Security Newport | Approach Score 45/100 |
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Company no. 16002214 · Companies House |
| 20 | Wentloog Security Cardiff, County of Cardiff A director sits on 4 or more companies | Approach Score 43/100 | We hold older figures than Companies House
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Company no. 02536918 · Companies House |
| 21 | Citi Security (cardiff) Cardiff | Approach Score 41/100 |
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Company no. 07339356 · Companies House |
| 22 | Overt Security Barry | Approach Score 40/100 |
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Company no. 11258633 · Companies House |
| 23 | Griffiths Security & Smart Technology Pontypridd | Approach Score 40/100 |
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Company no. 13360673 · Companies House |
| 24 | Lyons DEN Security Pontyclun, MID Glamorgan A director sits on 4 or more companies | Approach Score 36/100 |
|
| 25 | Hitec Security Solutions Cardiff | Approach Score 36/100 |
More about this firm
Company no. 09014653 · Companies House |
4 more firms are in the list, in Approach Score order.
You're seeing the first 25. Buy all 29 for £799 + VAT, with the facts behind each score, director names, shareholders and financials.
Buy the list of all 29 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.
What's in the file
One row per firm, in Approach Score order, as Excel + CSV.
It holds the facts behind each score, points for each part of the score, financials with dates, publicly available contact details, where identified, director names and named shareholders.
Some people with significant control appear as Other individual, with no further detail. Director email lookups are not included.
How this list is filtered
- 5 or more staff, from filed headcount or our estimate where none is filed.
- Registered office in Cardiff.
How this list is built
The Approach Score ranks firms mainly on public Companies House information about owner tenure and age, ownership, size, financial strength and recent register changes.
Firms with higher scores appear first in each list.
Use the ranking to order research, then check each business directly.
What it does not mean
No firm here is for sale, and the score says nothing about any owner's plans.
At least 95% of the firms where we hold directors had them checked in or after November 2026.
What we do not cover
Regulatory information is not included in this list. Buyers should check the relevant register as part of their due diligence. Check individual licences on the Security Industry Authority's register of licence holders. Company approval is voluntary and can be checked separately on its Register of Approved Contractors.
Why age bands but no people's names
Age bands come from the month and year of birth on Companies House. This page shows no exact ages and no people's names. Both come with the purchased list. The band edges from 45 to 65 are the ages where the score changes. A row shows no age bands when a director's surname is in the firm's name, its group's name or its website. Those directors' ages still count towards the score.
Is this your firm?
You can ask us to take it off every acquisition page, and out of every list we sell after that. Give us your name and work email, and we send you a link to confirm. If your email address is on the firm's own website domain, the firm comes off once you confirm. If it is not, a person reviews your request first. A list already sold stays with its buyer.
To have personal data erased, see our privacy policy.
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The standard Firmbase list
Buy the list of all 29 firms, with director names, ages and shareholders
Each row comes with the facts behind its score, financials with dates and contact details.