| Company | Timeline | Status | |
| St. Elmo House Management Company Limited Director • Principal Theatre College | 26 Aug 2004←7 Years→15 Aug 2012 | Active | |
| Laine Theatre ARTS Holdings Limited Director • Unreported | 27 Mar 1998←27 Years→Current | Active | |
Laine-Davies Associates Limited Director • Company Director | 17 Oct 1994←20 Years→5 May 2015 | Dissolved | |
| Betty Laine Management Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Laine Theatre ARTS Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
