| Date | Acquired | Amount |
|---|---|---|
| May 15, 2015 |
|
£ 780,000,000 |
| Apr 16, 2015 |
|
£ 682,000,000 |
| Mar 09, 2012 |
|
Undisclosed amount |
| Oct 01, 2007 |
|
$ 218,000,000 |
| Jan 01, 2007 |
|
Undisclosed amount |
