1. 1-VIA 2019
2. ANT Industries 1972
3. Applied Measurements Ltd 1991
4. Aquasium Technology 1995
5. Astec Precision 1998
6. Dunlop Aircraft Tyres 1996
7. e2v Technologies 1947
8. Eurosat
9. FDM Digital Solutions 2013
10. Forward Composites 2012
11. Ipeco 1960
12. Magdrive 2019
13. Metalysis 2001
14. Rolls-Royce plc 1906
15. TISICS 2005
16. Trace Technologies 2002
17. Unicomm Digital 2013
18. Versarien 2010
19. Victrex 1993
20. Wilson Alexander 2005