| Company | Timeline | Status | |
| Frischmann Projects Ltd Director • Consulting Engineer | 6 May 1993←4 Years→30 Jan 1998 | Active | |
| Frischmann Partners Holdings Ltd Director • Consulting Engineer | 31 Dec 1992←5 Years→30 Jan 1998 | Active | |
| Frischmann Process Technology Ltd Director • Civil Engineer | 13 Sep 1992←5 Years→30 Jan 1998 | Active | |
Frischmann Milton Keynes Ltd Director • Civil Engineer | 31 Dec 1991←6 Years→30 Jan 1998 | Dissolved | |
| Pell Frischmann Consultants Limited Director • Consulting Engineer | 31 Dec 1991←6 Years→30 Jan 1998 | Active | |
