| May 18, 2015 | Henderson Global Investors | 2.32% | still open |
| May 8, 2015 | Blackrock Investment Management (UK) Limited | 1.08% | still open |
| April 20, 2015 | Henderson Global Investors | 2.27% | still open |
| April 20, 2015 | Blackrock Investment Management (UK) Limited | 1.12% | still open |
| April 9, 2015 | Blackrock Investment Management (UK) Limited | 1.09% | still open |
| March 31, 2015 | Henderson Global Investors | 2.18% | still open |
| March 30, 2015 | Blackrock Investment Management (UK) Limited | 1.19% | still open |
| March 13, 2015 | Henderson Global Investors | 2.28% | still open |
| March 4, 2015 | Blackrock Investment Management (UK) Limited | 1.20% | still open |
| January 30, 2015 | Blackrock Investment Management (UK) Limited | 1.11% | still open |
| January 15, 2015 | Blackrock Investment Management (UK) Limited | 1.01% | still open |
| January 15, 2015 | Insight Investment Management (global) LTD | 0.45% | still open |
| December 31, 2014 | Henderson Global Investors | 2.33% | still open |
| December 30, 2014 | Blackrock Investment Management (UK) Limited | 0.90% | still open |
| November 21, 2014 | Henderson Global Investors | 2.20% | still open |
| November 17, 2014 | Henderson Global Investors | 2.11% | still open |
| November 14, 2014 | Henderson Global Investors | 2.04% | still open |
| November 13, 2014 | Henderson Global Investors | 1.90% | still open |
| November 12, 2014 | Henderson Global Investors | 1.79% | still open |
| November 7, 2014 | Henderson Global Investors | 1.53% | still open |
| October 28, 2014 | Blackrock Investment Management (UK) Limited | 0.89% | still open |
| October 23, 2014 | Blackrock Investment Management (UK) Limited | 0.90% | still open |
| October 21, 2014 | Blackrock Investment Management (UK) Limited | 0.89% | still open |
| September 24, 2014 | Henderson Global Investors | 1.43% | still open |
| July 24, 2014 | Henderson Global Investors | 1.21% | still open |
| July 1, 2014 | Insight Investment Management (global) LTD | 0.60% | still open |
| June 20, 2014 | Blackrock Investment Management (UK) Limited | 0.97% | still open |
| June 18, 2014 | Henderson Global Investors | 1.18% | still open |
| June 5, 2014 | Henderson Global Investors | 1.21% | still open |
| June 5, 2014 | Alphagen Capital Limited | 0.00% | still open |
| May 29, 2014 | Blackrock Investment Management (UK) Limited | 1.08% | still open |
| May 15, 2014 | Henderson Global Investors | 1.39% | still open |
| May 12, 2014 | Henderson Global Investors | 1.60% | still open |
| May 12, 2014 | Blackrock Investment Management (UK) Limited | 1.19% | still open |
| May 8, 2014 | Insight Investment Management (global) LTD | 0.52% | still open |
| May 7, 2014 | Alphagen Capital Limited | 1.54% | still open |
| May 7, 2014 | Blackrock Investment Management (UK) Limited | 1.24% | still open |
| April 10, 2014 | Alphagen Capital Limited | 1.49% | still open |
| April 3, 2014 | Blackrock Investment Management (UK) Limited | 1.39% | still open |
| March 27, 2014 | Alphagen Capital Limited | 1.58% | still open |
| February 27, 2014 | Alphagen Capital Limited | 1.65% | still open |
| February 12, 2014 | Blackrock Investment Management (UK) Limited | 1.44% | still open |
| February 11, 2014 | Alphagen Capital Limited | 1.52% | still open |
| February 4, 2014 | Alphagen Capital Limited | 1.49% | still open |
| January 31, 2014 | Alphagen Capital Limited | 1.58% | still open |
| January 30, 2014 | Alphagen Capital Limited | 1.61% | still open |
| January 27, 2014 | Alphagen Capital Limited | 1.74% | still open |
| January 2, 2014 | Blackrock Investment Management (UK) Limited | 1.56% | still open |
| December 27, 2013 | Alphagen Capital Limited | 1.81% | still open |
| December 19, 2013 | Alphagen Capital Limited | 1.70% | still open |