As at 02 March, 2010 the following shareholders have an interest of 3% or more in the shares of common stock of the company:
| Number of US$0.10 Shares of common stock |
Percentage | |
| L. F. Orbach | 2,909,185 | 14.2% |
| Ennismore Fund Management | 2,150,000 | 10.5% |
| J. O. Hambro Capital Management | 2,050,000 | 10.0% |
| The Wellcome Trust Limited | 1,987,568 | 9.7% |
| Herald Investment Trust | 1,737,500 | 8.5% |
| R. J. Morley | 1,402,852 | 6.9% |
| Invesco English & International Trust | 1,190,000 | 5.8% |
| The Quarto Group, Inc. | 765,321 | 3.7% |
| Lattice Group Pension Scheme | 734,882 | 3.6% |
| Liontrust | 693,348 | 3.4% |