The largest other research and experimental development on natural sciences and engineering companies in London

Ranked by shareholders' funds, from 49 active companies in the SE 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.

Other research and experimental development on natural sciences and engineering in London top 20

1. AIREX TECHNOLOGIES LTD

£7,466,137 10017714 since 2016
2. SUSTAINABLE VENTURE DEVELOPMENT PARTNERS LTD

£3,000,000 07660938 since 2011
3. CHEMASTERY GROUP LTD

£2,915,498 12290130 since 2019
4. BLAKBEAR LTD

£2,308,155 10916134 since 2017
5. DARWIN INNOVATION GROUP LTD

£1,352,973 07854187 since 2011
6. MATOHA INSTRUMENTATION LTD.

£934,904 11387533 since 2018
7. DIGITAL TV GROUP

£482,153 03950028 since 2000
8. GURU SYSTEMS LIMITED

£366,291 08172055 since 2012
9. RESPRO (NPD) LTD

£294,630 06725349 since 2008
10. PROSEMBLE GROUP LTD

£124,989 15721303 since 2024
11. SUSTAINABLE PIONEERS C.I.C.

£41,651 07774279 since 2011
12. GREAT SCOTT! PRODUCTIONS LIMITED

£40,665 09307265 since 2014
13. NEUROTECH LTD

£39,466 10568713 since 2017
14. HYPHORA CONSULTING LTD.

£27,536 12904446 since 2020
15. TUCCO LTD

£24,026 14520943 since 2022
16. SAHI ENERGY PARTNERS LIMITED

£17,945 16248657 since 2025
17. HAWKES MEDTECH LIMITED

£16,590 11825918 since 2019
18. INTSTELFORCE LTD

£8,133 11804613 since 2019
19. POTENTIAL ENERGY GROUP LIMITED

£7,624 15306950 since 2023
20. VIBRANT LANDSCAPES LIMITED

£7,419 12706340 since 2020