The largest technical testing and analysis companies in Northampton

Ranked by shareholders' funds, from 46 active companies in the NN postcode area.

"Largest" here means shareholders' funds — what the most recent balance sheet says the company is worth. It is the only measure of size filed by enough companies to rank on.

Companies that have never filed accounts cannot appear, however big they are. Figures are as filed at Companies House and can be a year or more old.

Technical testing and analysis in Northampton top 20

1. AERO RESEARCH PARTNERS LIMITED

£4,893,723 08134434 since 2012
2. NDE RESEARCH ASSOCIATION

£1,110,452 06296693 since 2007
3. TESTUK LTD

£477,737 12016650 since 2019
4. ISOTEST LIMITED

£455,810 12771081 since 2020
5. LISTERS GEOTECHNICAL CONSULTANTS LIMITED

£347,035 06294866 since 2007
6. VELO BARN EQUIPMENT LIMITED

£253,647 11232366 since 2018
7. MATT COWING LIMITED

£240,715 04865803 since 2003
8. ASHBY TECHNICAL SUPPORT SERVICES LIMITED

£197,032 07732587 since 2011
9. IDRILL + LIMITED

£180,573 06837199 since 2009
10. SYSTEM DESIGN EVALUATION LIMITED

£175,989 02061622 since 1986
11. TAYLORMADE CMM SOLUTIONS LTD

£77,303 09871284 since 2015
12. TEST SAFE ALARMS LIMITED

£77,185 10959291 since 2017
13. DUTY TO MANAGE LIMITED

£76,481 07108164 since 2009
14. HYDRA-TEST LIMITED

£53,611 10876372 since 2017
15. TOTAL WEIGHING SOLUTIONS LIMITED

£52,347 09439695 since 2015
16. A G I PLUS LTD

£48,725 12056004 since 2019
17. KIDIX UK LTD

£40,847 16046761 since 2024
18. INTEGRATED VEHICLE TECHNOLOGY LTD.

£34,906 03851483 since 1999
19. 586 ENGINEERING LTD

£31,404 05741250 since 2006
20. B&W TECHNOLOGIES LTD

£26,894 13342185 since 2021