| July 30, 2014 | Blackrock Investment Management (UK) Limited | 2.74% | still open |
| July 23, 2014 | Blackrock Investment Management (UK) Limited | 2.64% | still open |
| July 14, 2014 | Blackrock Investment Management (UK) Limited | 2.59% | still open |
| June 18, 2014 | Blackrock Investment Management (UK) Limited | 2.68% | still open |
| May 30, 2014 | Blackrock Investment Management (UK) Limited | 2.79% | still open |
| May 9, 2014 | Blackrock Investment Management (UK) Limited | 2.87% | still open |
| April 1, 2014 | Blackrock Investment Management (UK) Limited | 2.95% | still open |
| March 31, 2014 | Blackrock Institutional Trust Company, National Association | 1.19% | still open |
| March 12, 2014 | Blackrock Investment Management (UK) Limited | 3.10% | still open |
| February 14, 2014 | Blackrock Investment Management (UK) Limited | 2.92% | still open |
| February 12, 2014 | Blackrock Investment Management (UK) Limited | 2.85% | still open |
| February 11, 2014 | Blackrock Investment Management (UK) Limited | 2.67% | still open |
| February 10, 2014 | Blackrock Investment Management (UK) Limited | 2.58% | still open |
| February 7, 2014 | Blackrock Investment Management (UK) Limited | 2.29% | still open |
| February 6, 2014 | Blackrock Investment Management (UK) Limited | 2.17% | still open |
| February 5, 2014 | Blackrock Investment Management (UK) Limited | 2.03% | still open |
| February 5, 2014 | Blackrock Institutional Trust Company, National Association | 1.20% | still open |
| January 31, 2014 | Blackrock Investment Management (UK) Limited | 1.92% | still open |
| January 17, 2014 | Blackrock Investment Management (UK) Limited | 1.81% | still open |
| January 2, 2014 | Blackrock Investment Management (UK) Limited | 1.73% | still open |
| December 17, 2013 | Blackrock Investment Management (UK) Limited | 1.60% | still open |
| December 11, 2013 | Blackrock Investment Management (UK) Limited | 1.52% | still open |
| December 11, 2013 | Oxford Asset Management | 0.49% | still open |
| December 6, 2013 | Blackrock Investment Management (UK) Limited | 1.40% | still open |
| December 2, 2013 | Blackrock Investment Management (UK) Limited | 1.30% | still open |
| November 26, 2013 | Blackrock Investment Management (UK) Limited | 1.21% | still open |
| November 20, 2013 | Blackrock Investment Management (UK) Limited | 1.10% | still open |
| November 11, 2013 | Blackrock Investment Management (UK) Limited | 1.01% | still open |
| November 7, 2013 | Blackrock Investment Management (UK) Limited | 0.94% | still open |
| October 30, 2013 | Ennismore Fund Management Limited | 1.04% | still open |
| October 29, 2013 | Ennismore Fund Management Limited | 0.97% | still open |
| October 28, 2013 | Oxford Asset Management | 0.50% | still open |
| October 25, 2013 | Ennismore Fund Management Limited | 0.61% | still open |
| October 16, 2013 | Blackrock Advisors (UK) Limited | 0.57% | still open |
| September 18, 2013 | Blackrock Investment Management (UK) Limited | 0.89% | still open |
| July 5, 2013 | Blackrock Institutional Trust Company, National Association | 1.10% | still open |
| July 5, 2013 | Blackrock Advisors (UK) Limited | 0.70% | still open |
| July 2, 2013 | Blackrock Investment Management (UK) Limited | 0.90% | still open |
| June 17, 2013 | Blackrock Investment Management (UK) Limited | 0.80% | still open |
| June 5, 2013 | Blackrock Institutional Trust Company, National Association | 1.00% | still open |
| May 28, 2013 | Blackrock Investment Management (UK) Limited | 0.70% | still open |
| May 22, 2013 | Blackrock Advisors (UK) Limited | 0.60% | still open |
| May 21, 2013 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| May 17, 2013 | Blackrock Investment Management (UK) Limited | 0.61% | still open |
| May 9, 2013 | Blackrock Advisors (UK) Limited | 0.50% | still open |
| May 7, 2013 | Blackrock Investment Management (UK) Limited | 0.50% | still open |
| April 19, 2013 | Blackrock Institutional Trust Company, National Association | 0.80% | still open |
| April 5, 2013 | Blackrock Institutional Trust Company, National Association | 0.72% | still open |
| March 25, 2013 | Blackrock Institutional Trust Company, National Association | 0.61% | still open |
| March 15, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |