Testing, inspection and certification firms to acquire in Scotland

Name: Testing, inspection and certification firms to acquire in Scotland
Creator: Firmbase
License: https://firmbase.co/terms

Updated 9 November 2026

Looking to acquire a testing, inspection or certification firm in Scotland? Firmbase ranks 60 testing, inspection and certification firms 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 16 years. Looking beyond Scotland? Explore the full UK list of testing, inspection and certification firms.

Firms

UK 753

24%

Every director 55+

UK 27%

33%

Held 75%+ by one person

UK 22%

Median years in business

UK 16

Median headcount

UK 10

£500k to £1m

Median turnover band

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

Towns with the most firms

Glasgow 24 firms
Edinburgh 12 firms

The first 25 firms, in Approach Score order

Rank	Firm	Approach Score	The facts behind the score
1	Calbarrie Compliance Services Glasgow	Approach Score 83/100	Director aged 60-64 · in post since 2008 1 individual holds 75%+ · independent More about this firm 11 staff · turnover est. £612k Net assets £191k (Jan 2025) Company no. SC338205 · Companies House calbarrie.com/calbarrie-glasgow
2	MCS Group Loanhead	Approach Score 78/100	1 director aged 60-64, 1 aged 55-59, 1 aged 50-54 · longest in post since 1999 2 individuals hold 75%+ · independent More about this firm 10 staff · turnover est. £1.5m Net assets £1.3m (Jul 2025) Company no. SC198842 · Companies House themcsgroup.co.uk
3	Gartcarron Fire Engineering Kirkintilloch	Approach Score 77/100	1 director aged 65-69, 1 aged 60-64 · longest in post since 2010 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £161k Net assets £11k (Feb 2025) Company no. SC386330 · Companies House gartcarronfireengineering.com
4	Connect NDT Aberdeen	Approach Score 76/100	1 director aged 70 or over, 1 aged 65-69, 2 aged 55-59 · longest in post since 2000 Independent More about this firm 26 staff · turnover est. £1.8m Net assets £310k (Mar 2026) Company no. SC205224 · Companies House connectndt.com
5	R.U.M. Consultancy Netherley, Aberdeenshire	Approach Score 76/100	1 director aged 70 or over, 1 aged 55-59 · longest in post since 2001 Held via a trust or firm · corporate owner More about this firm 7 staff · turnover est. £490k Net assets £301k (Mar 2025) Director resigned Feb 2025 · PSC register changed Mar 2026 Company no. SC218874 · Companies House rumconsultancy.co.uk
6	Phaser Biomedical Dundee	Approach Score 75/100	2 directors aged 70 or over, 1 aged 65-69, 1 aged 45-49 · longest in post since 2022 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £141k Net assets £80k (Dec 2025) Company no. SC748032 · Companies House
7	Thistle Access NDT Fort William, Inverness-shire	Approach Score 69/100	We hold older figures than Companies House Director aged 60-64 · in post since 2002 2 individuals hold 50%+ · independent More about this firm 21 staff · turnover est. £710k Net assets £523k · newer accounts made up to Mar 2026 Company no. SC240019 · Companies House thistleaccess.co.uk
8	Muro Testing & Certification Aberdeen, Aberdeenshire	Approach Score 68/100	We hold older figures than Companies House Director aged 55-59 · in post since 2013 1 individual holds 75%+ · held via a trust or firm · independent More about this firm 6 staff · turnover est. £400k Net assets £37k (Mar 2021) · newer accounts made up to Mar 2026 Company no. SC445773 · Companies House muro-uk.com
9	Highway Data Systems Glasgow	Approach Score 68/100	We hold older figures than Companies House 1 director aged 65-69, 1 aged 55-59 · longest in post since 2011 Independent More about this firm 17 staff · turnover est. £2.1m Net assets £843k · newer accounts made up to Nov 2025 PSC register changed Feb 2025 Company no. SC401345 · Companies House highwaydata.co.uk
10	Tritonia Oban, Argyll & Bute, Argyll and Bute	Approach Score 68/100	We hold older figures than Companies House 2 directors aged 60-64 · longest in post since 2018 2 individuals hold 50%+ · independent More about this firm 15 staff · turnover est. £677k Net assets £159k · newer accounts made up to Mar 2025 Director resigned Jul 2026 · PSC register changed Jul 2026 Company no. SC587673 · Companies House tritonia.scot
11	Oldbaum Services Perth	Approach Score 68/100	1 director aged 55-59, 1 aged 50-54 · longest in post since 2005 Independent More about this firm 10 staff · turnover est. £1.3m Net assets £692k (Feb 2025) PSC register changed May 2026 Company no. SC279398 · Companies House oldbaumservices.co.uk
12	Coolflame Heating Prestwick, Renfrewshire	Approach Score 68/100	We hold older figures than Companies House Director aged 55-59 · in post since 2016 1 individual holds 75%+ · independent More about this firm 6 staff · turnover est. £321k Net assets £130k (Jun 2021) · newer accounts made up to Jun 2025 Company no. SC539042 · Companies House
13	DFO Engineering Edinburgh	Approach Score 67/100	Director aged 70 or over · in post since 2023 1 individual holds 75%+ · independent More about this firm 5 staff · turnover est. £482k No net assets figure held · accounts made up to Jun 2025 Company no. SC772620 · Companies House dfoengineering.co.uk
14	HAZ Tech Glasgow	Approach Score 67/100	Director aged 50-54 · in post since 2019 1 individual holds 75%+ · independent More about this firm 22 staff · turnover est. £1.3m Net assets £452k (Feb 2025) Company no. SC620436 · Companies House haztech.com
15	Pmac Inspection Aberdeen A director sits on 4 or more companies	Approach Score 66/100	1 director aged 70 or over, 1 aged 50-54 · longest in post since 2009 Independent More about this firm 11 staff · turnover est. £1.4m Net assets £153k (Mar 2025) Company no. SC365835 · Companies House pmacsystems.com
16	Delta Calibration	Approach Score 65/100	1 director aged 70 or over, 1 aged 65-69, 1 aged 50-54 · longest in post since 2024 Independent More about this firm 12 staff · turnover est. £318k Net assets £12k (Feb 2025) Director resigned Nov 2025 · PSC register changed Nov 2025 Company no. SC163846 · Companies House deltacalibration.com
17	Resolute Energy Solutions Stonehaven	Approach Score 65/100	1 director aged 55-59, 1 aged 45-49 · longest in post since 2016 1 individual holds 75%+ · independent More about this firm 5 staff · turnover est. £195k Net assets £101k (Mar 2026) Company no. SC531151 · Companies House
18	Wmci Bathgate	Approach Score 62/100	Director aged 65-69 · in post since 2021 Independent More about this firm 9 staff · turnover est. £461k Net assets £32k (Feb 2025) Company no. SC589643 · Companies House
19	Ross Quality Control	Approach Score 61/100	Longest in post since 2004 1 individual holds 75%+ · independent More about this firm 15 staff · turnover est. £2.6m Net assets £2m (Dec 2025) Company no. SC255970 · Companies House rossquality.co.uk
20	Fife Autotech Glenrothes	Approach Score 60/100	2 directors aged under 45 · longest in post since 2020 2 individuals hold 75%+ · independent More about this firm 10 staff · turnover est. £929k Net assets £227k (Mar 2025) Company no. SC665885 · Companies House fifeautotechltd.co.uk
21	RCS Glasgow A director sits on 4 or more companies	Approach Score 60/100	Director aged 50-54 · in post since 2020 1 individual holds 75%+ · independent More about this firm 15 staff · turnover est. £3.5m Net assets £2.9m (Dec 2025) Company no. SC338125 · Companies House rcslev.com
22	PHX Water Perth	Approach Score 60/100	Director aged under 45 · in post since 2018 1 individual holds 75%+ · independent More about this firm 9 staff · turnover est. £734k Net assets £246k (Mar 2025) Company no. SC590753 · Companies House phxwater.co.uk
23	ARB Wind Glenrothes, Fife A director sits on 4 or more companies	Approach Score 59/100	2 directors aged 55-59, 1 aged under 45 · longest in post since 2018 1 individual holds 75%+ · corporate owner More about this firm 10 staff · turnover est. £1.7m Net assets £1.4m (Mar 2025) Company no. SC612536 · Companies House arbwind.co.uk
24	Inspection Ecosse Laurieston, Falkirk	Approach Score 57/100	We hold older figures than Companies House 1 director aged 70 or over, 2 aged under 45 · longest in post since 2013 Independent More about this firm 9 staff · turnover est. £794k Net assets £460k · newer accounts made up to Sep 2025 Charge satisfied Jun 2026 · PSC register changed Oct 2026 Company no. SC144985 · Companies House inspectionecosse.com
25	Power Quality Management Glasgow	Approach Score 57/100	1 director aged 55-59, 1 aged under 45 · longest in post since 2015 Corporate owner More about this firm 5 staff · turnover £2m Net assets £754k (Nov 2025) Company no. SC259660 · Companies House pqmanagement.co.uk

35 more firms are in the list, in Approach Score order.

You're seeing the first 25. Buy all 60 for £799 + VAT, with the facts behind each score, director names, shareholders and financials.

Buy the list of all 60 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 Scotland.

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. Check UKAS accreditation through its accredited bodies directory and read the accreditation schedule. Accreditation covers a defined scope of work, rather than every service a firm offers.

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

TIC Companies in the UK