| Date | Acquired | Amount |
|---|---|---|
| Feb 16, 2017 |
|
Undisclosed amount |
| Dec 13, 2016 |
|
Undisclosed amount |
| Feb 11, 2016 |
|
Undisclosed amount |
| Oct 07, 2015 |
|
Undisclosed amount |
| Aug 20, 2015 |
|
Undisclosed amount |
| Jan 08, 2015 |
|
Undisclosed amount |
| Jun 25, 2014 |
|
£ 80,000,000 |
| Oct 10, 2011 |
|
Undisclosed amount |
| Feb 28, 2011 |
|
$ 50,000,000 |
| Jan 13, 2011 |
|
£ 208,000,000 |
| May 05, 2010 |
|
£ 134,000,000 |
| Dec 07, 2009 |
|
Undisclosed amount |
| May 10, 2008 |
|
£ 44,700,000 |
