So far as the Company is aware, the following persons (other than the Directors and Senior Managers) had notifiable interests in three per cent. or more of the issue share capital of the Company (as at 8 March 2019):
| Fund Manager / Owner | Shares | % issued share capital |
| Double A Limited* | 154,345,944 | 9.11 |
| Aberforth Partners LLP | 150,573,705 | 8.89 |
| Baillie Gifford & Co Ltd | 94,143,290 | 5.56 |
| Hargreaves Lansdown Asset Mgmt | 79,878,650 | 4.71 |
| EnQuest Employee Benefit Trust | 73,169,367 | 4.32 |
| Dimensional Fund Advisors | 69,579,542 | 4.11 |
| Swedbank Robur Fonder AB | 68,862,924 | 4.06 |
| BlackRock Inc | 55,514,237 | 3.28 |
| Signal Capital Partners LLP | 51,036,396 | 3.01 |
| * Double A Limited is a company beneficially owned by the extended family of Amjad Bseisu |