Security systems installers to acquire in Bristol

Name: Security systems installers to acquire in Bristol
Creator: Firmbase
License: https://firmbase.co/terms

Updated 9 November 2026

Looking to acquire a security systems installer in Bristol? Firmbase ranks 25 security systems installers 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 10 staff and has been in business for 15 years. Looking beyond Bristol? Explore the full South West list of security systems installers.

Firms

UK 1,024

Every director 55+

UK 24%

20%

Held 75%+ by one person

UK 29%

Median years in business

UK 15

Median headcount

UK 9

£500k to £1m

Median turnover band

UK £500k to £1m · includes our estimates

All 25 firms, in Approach Score order

Rank	Firm	Approach Score	The facts behind the score
1	Alpha Fire and Security Solutions ST. Annes, Bristol	Approach Score 81/100	Director aged 60-64 · in post since 2007 1 individual holds 75%+ · held via a trust or firm · independent More about this firm 11 staff · turnover est. £571k Net assets £877k (Oct 2025) Company no. 06361570 · Companies House alpha-fire.com
2	MFS Fire and Security Bristol, North Somerset	Approach Score 80/100	2 directors aged 65-69, 1 aged 45-49 · longest in post since 2001 Independent More about this firm 20 staff · turnover est. £1.2m Net assets £433k (Mar 2025) Director resigned Apr 2025 · PSC register changed Apr 2025 Company no. 04110737 · Companies House mfs-ltd.co.uk
3	Thornhill Security Bristol	Approach Score 75/100	We hold older figures than Companies House Longest in post since 2002 2 individuals hold 50%+ · independent More about this firm 10 staff · turnover est. £1.3m Net assets £38k · newer accounts made up to Jun 2025 Charge satisfied Oct 2025 Company no. 04481891 · Companies House thornhillsecurityltd.co.uk
4	Astra Security Yate Brisol, South Gloucestershire	Approach Score 72/100	1 director aged 60-64, 1 aged 45-49 · longest in post since 2006 Corporate owner More about this firm 15 staff · turnover est. £2.6m Net assets £1.7m (May 2025) Director resigned Apr 2026 · charge satisfied Mar 2026 · PSC register changed Apr 2026 Company no. 02720811 · Companies House astrasec.com
5	Multi-Security Banwell, North Somerset	Approach Score 69/100	1 director aged 55-59, 1 aged under 45 · longest in post since 2019 1 individual holds 75%+ · independent More about this firm 5 staff · turnover est. £320k Net assets £9k (Mar 2025) Company no. 11832132 · Companies House multi-security.co.uk
6	Balmoral Systems Bristol	Approach Score 64/100	1 director aged 55-59, 1 aged 50-54 · longest in post since 2002 2 individuals hold 50%+ · independent More about this firm 15 staff · turnover est. £1.6m Net assets £255k (Aug 2025) Company no. 04592615 · Companies House balmoralsystems.co.uk
7	Adept Fire & Security Bristol	Approach Score 64/100	Director aged under 45 · in post since 2011 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £859k Net assets £401k (Mar 2025) Company no. 07634916 · Companies House adeptfiresecurity.co.uk
8	Avon Alarms Bristol	Approach Score 62/100	We hold older figures than Companies House 1 director aged 70 or over, 1 aged 55-59, 1 aged 50-54 · longest in post since 2018 1 individual holds 75%+ · independent More about this firm 10 staff · turnover est. £640k Net assets £517k · newer accounts made up to Mar 2025 Company no. 01544164 · Companies House avonalarms.co.uk
9	Avon Alarms Bristol	Approach Score 61/100	We hold older figures than Companies House 1 director aged 70 or over, 1 aged 55-59, 1 aged 50-54 · longest in post since 1999 Corporate owner More about this firm 6 staff · turnover est. £322k Net assets £220k · newer accounts made up to Mar 2025 Company no. 03691755 · Companies House avonalarms.co.uk
10	Opsys Fire & Security Bristol	Approach Score 61/100	1 director aged 65-69, 1 aged 60-64, 1 aged 45-49, 1 aged under 45 · longest in post since 2023 Independent More about this firm 6 staff · turnover est. £201k Net assets £68k (Sep 2025) Company no. 14980293 · Companies House opsysfireandsecurity.com
11	Red Technical Bristol, Gloucestershire	Approach Score 61/100	1 director aged 55-59, 1 aged 45-49 · longest in post since 2014 2 individuals hold 50%+ · independent More about this firm 14 staff · turnover est. £1.1m Net assets £29k (Oct 2025) Company no. 09256819 · Companies House redtechnical.com
12	WE ARE Security Bristol	Approach Score 60/100	1 director aged 55-59, 2 aged under 45 · longest in post since 1999 Independent More about this firm 9 staff · turnover est. £789k Net assets £314k (Mar 2025) PSC register changed Jul 2026 Company no. 03736668 · Companies House wearesecurity.co.uk
13	JD Fire and Security Bristol, Gloucestershire	Approach Score 58/100	1 director aged 55-59, 1 aged under 45 · longest in post since 2020 2 individuals hold 50%+ · independent More about this firm 6 staff · turnover est. £315k Net assets £456k (Feb 2025) Company no. 12480867 · Companies House
14	Select Security Solutions Bristol	Approach Score 56/100	Director aged 60-64 · in post since 2020 Independent More about this firm 7 staff · turnover est. £204k Net assets £2k (May 2025) Director resigned Jan 2026 · PSC register changed Mar 2025 Company no. 07880793 · Companies House
15	Gemsec Bristol	Approach Score 55/100	2 directors aged 55-59, 2 aged 50-54 · longest in post since 2012 Independent More about this firm 28 staff · turnover est. £1.8m Net assets £220k (Dec 2025) Company no. 08106875 · Companies House gemsec.co.uk
16	Omega Fire and Security Weston-Super-Mare	Approach Score 54/100	2 directors aged under 45 · longest in post since 2014 2 individuals hold 50%+ · independent More about this firm 8 staff · turnover est. £285k Net assets £22k (Jul 2025) PSC register changed Apr 2025 Company no. 08982326 · Companies House omegafireandsecurity.co.uk
17	T9FS Weston Super Mare	Approach Score 52/100	Director aged 45-49 · in post since 2020 1 individual holds 75%+ · independent More about this firm 9 staff · turnover est. £784k Net assets £56k (Dec 2025) Company no. 13067071 · Companies House t9fs.co.uk
18	Remsurv Bristol A director sits on 4 or more companies	Approach Score 51/100	Director aged 45-49 · in post since 2015 Independent More about this firm 11 staff · turnover est. £1.7m Net assets £1.2m (Dec 2024) Director resigned Sep 2026 Company no. 09441156 · Companies House remsurv.co.uk
19	BAC Security Bristol	Approach Score 50/100	1 director aged 70 or over, 1 aged 45-49, 1 aged under 45 · longest in post since 2010 Independent More about this firm 22 staff · turnover est. £2.6m Net assets -£141k (Mar 2026) Charge satisfied May 2026 Company no. 07397974 · Companies House bacsecurity.com
20	Cannons Security Bristol	Approach Score 48/100	3 directors aged 45-49 · longest in post since 2005 Independent More about this firm 27 staff · turnover est. £1.8m Net assets £336k (Mar 2024) Charge satisfied Sep 2026 Company no. 02873788 · Companies House cannonssecurity.com
21	SHIELD Global Bristol A director sits on 4 or more companies	Approach Score 47/100	2 directors aged 45-49 · longest in post since 2016 Corporate owner More about this firm 24 staff · turnover est. £2.6m Net assets £1.7m (Jul 2024) Company no. 10447709 · Companies House shieldglobal.com
22	H & H Alarms Weston-Super-Mare, North Somerset	Approach Score 44/100	2 directors aged 45-49 · longest in post since 2012 Corporate owner More about this firm 9 staff · turnover est. £362k Net assets £58k (Mar 2025) Company no. 07942105 · Companies House hhalarms.co.uk
23	EVO Fire & Security Bristol	Approach Score 43/100	Director aged 45-49 · in post since 2017 Corporate owner More about this firm 6 staff · turnover est. £898k Net assets £379k (Mar 2025) Director resigned Mar 2026 Company no. 08934961 · Companies House evofire.co.uk
24	Spansec Security Weston-Super-Mare, Somerset	Approach Score 41/100	We hold older figures than Companies House 1 director aged 50-54, 1 aged under 45 · longest in post since 2012 2 individuals hold 50%+ · independent More about this firm 6 staff · turnover est. £300k Net assets £326 (Jan 2024) · newer accounts made up to Jan 2026 Company no. 06794591 · Companies House spansec.com
25	Dorset Fire & Security Bath, Dorset A director sits on 4 or more companies	Approach Score 38/100	We hold older figures than Companies House 1 director aged 60-64, 1 aged 50-54, 1 aged under 45 · longest in post since 2024 Corporate owner More about this firm 32 staff · turnover est. £2.4m Net assets £128k · newer accounts made up to Mar 2025 Company no. 05999178 · Companies House dorsetfiresecurity.com

Buy the list of all 25 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 Bristol.

See every filter on the UK list

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.

Read how the Approach Score works

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. The Security Industry Authority does not license alarm installation. Verify any claimed voluntary certification and its scope in the certifying body's directory, such as NSI's or SSAIB's; check SIA licences separately for guarding or key holding.

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.

Other areas

South West Bournemouth

The standard Firmbase list

Access Control Companies in the UK