| April 13, 2015 | Thunderbird Partners LLP | 0.93% | still open |
| April 1, 2015 | UBS Asset Management (UK) LTD | 2.16% | still open |
| April 1, 2015 | UBS Global Asset Management (UK) Ltd | 2.16% | still open |
| March 30, 2015 | UBS Asset Management (UK) LTD | 2.03% | still open |
| March 30, 2015 | UBS Global Asset Management (UK) Ltd | 2.03% | still open |
| March 27, 2015 | UBS Asset Management (UK) LTD | 1.94% | still open |
| March 27, 2015 | UBS Global Asset Management (UK) Ltd | 1.94% | still open |
| March 25, 2015 | UBS Asset Management (UK) LTD | 1.83% | still open |
| March 25, 2015 | UBS Global Asset Management (UK) Ltd | 1.83% | still open |
| March 17, 2015 | UBS Asset Management (UK) LTD | 1.75% | still open |
| March 17, 2015 | UBS Global Asset Management (UK) Ltd | 1.75% | still open |
| March 16, 2015 | UBS Asset Management (UK) LTD | 1.66% | still open |
| March 16, 2015 | UBS Global Asset Management (UK) Ltd | 1.66% | still open |
| March 9, 2015 | UBS Asset Management (UK) LTD | 1.55% | still open |
| March 9, 2015 | UBS Global Asset Management (UK) Ltd | 1.55% | still open |
| March 5, 2015 | UBS Asset Management (UK) LTD | 1.41% | still open |
| March 5, 2015 | UBS Global Asset Management (UK) Ltd | 1.41% | still open |
| March 3, 2015 | UBS Asset Management (UK) LTD | 1.32% | still open |
| March 3, 2015 | UBS Global Asset Management (UK) Ltd | 1.32% | still open |
| February 27, 2015 | UBS Asset Management (UK) LTD | 1.24% | still open |
| February 27, 2015 | UBS Global Asset Management (UK) Ltd | 1.24% | still open |
| February 25, 2015 | Thunderbird Partners LLP | 0.77% | still open |
| February 23, 2015 | Thunderbird Partners LLP | 0.66% | still open |
| February 19, 2015 | Thunderbird Partners LLP | 0.51% | still open |
| February 17, 2015 | UBS Asset Management (UK) LTD | 1.12% | still open |
| February 17, 2015 | UBS Global Asset Management (UK) Ltd | 1.12% | still open |
| February 12, 2015 | UBS Asset Management (UK) LTD | 0.91% | still open |
| February 12, 2015 | UBS Global Asset Management (UK) Ltd | 0.91% | still open |
| February 11, 2015 | BlackRock Investment Management (UK) Limited | 0.44% | still open |
| February 10, 2015 | BlackRock Investment Management (UK) Limited | 0.60% | still open |
| February 9, 2015 | UBS Asset Management (UK) LTD | 0.83% | still open |
| February 9, 2015 | UBS Global Asset Management (UK) Ltd | 0.83% | still open |
| February 3, 2015 | BlackRock Investment Management (UK) Limited | 0.95% | still open |
| January 19, 2015 | BlackRock Investment Management (UK) Limited | 0.84% | still open |
| January 9, 2015 | BlackRock Investment Management (UK) Limited | 0.78% | still open |
| December 1, 2014 | BlackRock Investment Management (UK) Limited | 0.68% | still open |
| November 27, 2014 | UBS Asset Management (UK) LTD | 0.70% | still open |
| November 27, 2014 | UBS Global Asset Management (UK) Ltd | 0.70% | still open |
| November 10, 2014 | UBS Asset Management (UK) LTD | 0.61% | still open |
| November 10, 2014 | UBS Global Asset Management (UK) Ltd | 0.61% | still open |
| November 7, 2014 | BlackRock Investment Management (UK) Limited | 0.75% | still open |
| November 3, 2014 | Millennium International Management LP | 0.49% | still open |
| October 21, 2014 | BlackRock Investment Management (UK) Limited | 0.65% | still open |
| October 21, 2014 | Millennium International Management LP | 0.51% | still open |
| October 20, 2014 | BlackRock Investment Management (UK) Limited | 0.75% | still open |
| October 17, 2014 | BlackRock Investment Management (UK) Limited | 0.69% | still open |
| October 17, 2014 | Millennium International Management LP | 0.49% | still open |
| October 16, 2014 | Millennium International Management LP | 0.52% | still open |
| October 13, 2014 | Millennium International Management LP | 0.66% | still open |
| October 1, 2014 | BlackRock Investment Management (UK) Limited | 0.77% | still open |