Engineering and environmental consultancies to acquire in Wales

Updated 9 November 2026

Looking to acquire an engineering or environmental consultancy in Wales? Firmbase ranks 23 engineering and environmental consultancies 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 18 years. Looking beyond Wales? Explore the full UK list of engineering and environmental consultancies.

23

Firms

UK 626

9%

Every director 55+

UK 15%

13%

Held 75%+ by one person

UK 19%

18

Median years in business

UK 14

15

Median headcount

UK 11

£500k to £1m

Median turnover band

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

All 23 firms, in Approach Score order

1

Egniol

Bangor, Gwynedd

A director sits on 4 or more companies

Approach Score

77/100
  • 1 director aged 65-69, 1 aged 55-59, 1 aged 45-49 · longest in post since 2008
  • 2 individuals hold 50%+ · independent
More about this firm
  • 44 staff · turnover est. £3.8m
  • Net assets £791k (Dec 2025)
  • Director resigned Jan 2026

Company no. 06668552 · Companies House

egniol.com

2

ION Consulting Engineers

Wrexham

Approach Score

70/100
  • 1 director aged 55-59, 1 aged 50-54 · longest in post since 2019
  • 2 individuals hold 50%+ · independent
More about this firm
  • 16 staff · turnover est. £796k
  • Net assets £429k (Jun 2026)

Company no. 12069739 · Companies House

ion-consulting.co.uk

3

Pebble Engineering

Port Talbot

Approach Score

68/100
  • 1 director aged 55-59, 1 aged 45-49 · longest in post since 2014
  • 2 individuals hold 50%+ · independent
More about this firm
  • 13 staff · turnover est. £865k
  • Net assets £289k (Oct 2025)

Company no. 09246132 · Companies House

pebble.engineering

4

Caulmert

Bangor, Gwynedd

Approach Score

64/100
  • 1 director aged 60-64, 1 aged 50-54, 1 aged 45-49 · longest in post since 2008
  • Independent
More about this firm
  • 43 staff · turnover est. £3.5m
  • Net assets £416k (Mar 2026)
  • Director resigned Apr 2025

Company no. 06716319 · Companies House

caulmert.com

5

Adept Consulting

Chepstow

Approach Score

62/100

We hold older figures than Companies House

  • Director aged 55-59 · in post since 2008
  • 2 individuals hold 50%+ · independent
More about this firm
  • 15 staff · turnover est. £645k
  • Net assets £198k (Mar 2022) · newer accounts made up to Mar 2025

Company no. 06519543 · Companies House

adeptco.co.uk

6

Bear Consulting

Newport

Approach Score

57/100
  • 1 director aged 45-49, 1 aged under 45 · longest in post since 2018
  • 1 individual holds 75%+ · independent
More about this firm
  • 8 staff · turnover est. £124k
  • Net assets £248k (Dec 2025)

Company no. 11735235 · Companies House

bear-consult.com

7

Auxilium Engineering Services

Port Talbot

A director sits on 4 or more companies

Approach Score

57/100
  • 1 director aged 55-59, 1 aged 50-54 · longest in post since 2003
  • 2 individuals hold 75%+ · independent
More about this firm
  • 5 staff · turnover est. £127k
  • Net assets -£30k (Jan 2026)

Company no. 04650999 · Companies House

auxilium-uk.com

8

CR Plus

Port Talbot, South Wales

Approach Score

56/100

We hold older figures than Companies House

  • 1 director aged 65-69, 2 aged under 45 · longest in post since 2005
  • 2 individuals hold 50%+ · independent
More about this firm
  • 15 staff · turnover est. £758k
  • Net assets £536k · newer accounts made up to Apr 2025

Company no. 05426066 · Companies House

crplus.co.uk

9

Nexus Engineering

Llanybydder, Carms

Approach Score

55/100
  • Director aged under 45 · in post since 2021
  • 1 individual holds 75%+ · independent
More about this firm
  • 5 staff · turnover est. £164k
  • Net assets £53k (Mar 2025)
  • Director resigned Dec 2024 · PSC register changed Dec 2024
10

Ecovigour

Newport, Monmouthshire

A director sits on 4 or more companies

Approach Score

54/100
  • 1 director aged 55-59, 1 aged under 45 · longest in post since 2007
  • Corporate owner
More about this firm
  • 34 staff · turnover est. £2.3m
  • Net assets £554k (Jan 2026)

Company no. 06313671 · Companies House

ecovigour.com

11

SRK Consulting (kazakhstan)

Newport

A director sits on 4 or more companies

Approach Score

52/100
  • 1 director aged 65-69, 3 aged 55-59, 1 aged 45-49 · longest in post since 2016
  • Corporate owner
More about this firm
  • 47 staff · turnover est. £6.6m
  • No net assets figure held · accounts made up to Dec 2025
  • Director resigned Jun 2026

Company no. 07301239 · Companies House

srk.co.uk

12

BSW Building Systems

Llandow, Cowbridge

A director sits on 4 or more companies

Approach Score

51/100

We hold older figures than Companies House

  • 1 director aged 70 or over, 1 aged 65-69, 1 aged 55-59 · longest in post since 2009
  • Corporate owner
More about this firm
  • 68 staff · turnover £9.4m
  • Net assets £815k · newer accounts made up to Jun 2025

Company no. 01822112 · Companies House

bswbuildings.com

13

Weetwood

Mold, Flintshire

Approach Score

49/100

We hold older figures than Companies House

  • 1 director aged 60-64, 1 aged 50-54, 1 aged 45-49, 2 aged under 45 · longest in post since 2011
  • Corporate owner
More about this firm
  • 14 staff · turnover est. £919k
  • Net assets £733k · newer accounts made up to Sep 2025
  • PSC register changed Mar 2026

Company no. 03638657 · Companies House

weetwood.net

14

Innovative Energy Consultancy

Wrexham

Approach Score

44/100
  • 1 director aged 45-49, 1 aged under 45 · longest in post since 2026
  • Corporate owner
More about this firm
  • 7 staff · turnover est. £458k
  • Net assets £600k (Mar 2026)
  • Director resigned Feb 2026 · PSC register changed Feb 2026
15

Avantis Group

Cardiff, Bridgend

A director sits on 4 or more companies

Approach Score

40/100
  • 1 director aged 55-59, 1 aged 45-49, 2 aged under 45 · longest in post since 2022
  • Corporate owner
More about this firm
  • 46 staff · turnover est. £21.4m
  • Net assets £854k (Mar 2024)

Company no. 14322729 · Companies House

avantisgroup.com

16

Excal

Capel Hendre Ammanford, Carmarthenshire

Approach Score

39/100
  • Director aged under 45 · in post since 2014
  • Independent
More about this firm
  • 14 staff · turnover est. £1.2m
  • Net assets £1.2m (Sep 2025)

Company no. 03199872 · Companies House

excaluk.com

17

RedSix

Llanelli

Approach Score

38/100
  • Director aged 45-49 · in post since 2015
  • Independent
More about this firm
  • 7 staff · turnover est. £286k

Company no. 09545963 · Companies House

red-six.co.uk

18

SCS Engineers

Cardiff

Approach Score

38/100
  • 1 director aged 60-64, 1 aged 55-59, 1 aged 45-49 · longest in post since 2017
  • Corporate owner
More about this firm
  • 53 staff · turnover £9.6m
  • Net assets -£101k (Apr 2025)

Company no. 10900468 · Companies House

scsengineers.com

19

Ingleside Engineering

Port Talbot

Approach Score

35/100
  • 1 director aged 45-49, 1 aged under 45 · longest in post since 2017
  • Held via a trust or firm · independent
More about this firm
  • 6 staff · turnover est. £804k
  • No net assets figure held · accounts made up to Mar 2026
  • PSC register changed Oct 2025

Company no. 04038998 · Companies House

ie.company

20

Shear Design

Cardiff Gate Business Park,, Cardiff, South Wales

Approach Score

35/100
  • 1 director aged 45-49, 2 aged under 45 · longest in post since 2018
  • Corporate owner
More about this firm
  • 25 staff · turnover est. £3.8m
  • Net assets £1.2m (Nov 2025)

Company no. 05262666 · Companies House

shear-design.com

21

Roger Casey Associates

Pembrokeshire

Approach Score

34/100

We hold older figures than Companies House

  • 2 directors aged under 45 · longest in post since 2023
  • Corporate owner
More about this firm
  • 14 staff · turnover est. £601k
  • Net assets £250k · newer accounts made up to Mar 2026
  • Director resigned Jul 2026

Company no. 05443224 · Companies House

rca-eng.co.uk

22

Aqua Terra Consultants

Cardiff

Approach Score

32/100
  • 1 director aged 45-49, 2 aged under 45 · longest in post since 2024
  • 1 individual holds 75%+ · independent
More about this firm
  • 5 staff · turnover est. £240k

Company no. 15820480 · Companies House

23

Integral Geotechnique (wales)

Caerphilly

A director sits on 4 or more companies

Approach Score

29/100

We hold older figures than Companies House

  • 1 director aged 50-54, 1 aged under 45 · longest in post since 2017
  • Corporate owner
More about this firm
  • 16 staff · turnover est. £4.4m
  • Net assets £3.8m (Nov 2021) · newer accounts made up to Nov 2025

Company no. 02110934 · Companies House

integral-geotec.co.uk

Buy the list of all 23 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 Wales.
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. There is no single regulator for these consultancies. Check claimed individual Engineering Council registration through RegCheck; professional registration does not certify the consultancy itself.

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.

You can find the company number on Companies House.

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The standard Firmbase list

Buy the list of all 23 firms, with director names, ages and shareholders

Each row comes with the facts behind its score, financials with dates and contact details.