| 31st May 2017 7:15 am | RNS | Total Voting Rights | 
                                                                            
                                            | 26th May 2017 3:18 pm | RNS | Final Dividend Timetable | 
                                                                            
                                            | 18th May 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 17th May 2017 7:00 am | RNS | Preliminary results for the year to 31 March 2017 | 
                                                                            
                                            | 8th May 2017 4:28 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 28th Apr 2017 2:09 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 24th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 21st Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 20th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 19th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 13th Apr 2017 4:55 pm | RNS | Transaction in Own Shares | 
                                                                            
                                            | 12th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 11th Apr 2017 2:39 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 11th Apr 2017 10:07 am | RNS | Post Stabilisation Notice | 
                                                                            
                                            | 11th Apr 2017 10:01 am | RNS | Post Stabilisation Notice | 
                                                                            
                                            | 11th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 10th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 7th Apr 2017 4:05 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 6th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 5th Apr 2017 3:15 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 5th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 4th Apr 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 31st Mar 2017 5:49 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 31st Mar 2017 5:47 pm | RNS | Transaction in Own Shares | 
                                                                            
                                            | 31st Mar 2017 5:25 pm | RNS | Share Repurchase Programme | 
                                                                            
                                            | 31st Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 30th Mar 2017 7:00 am | RNS | Notification of Close Period | 
                                                                            
                                            | 27th Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 23rd Mar 2017 1:21 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 23rd Mar 2017 1:16 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 23rd Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 22nd Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 21st Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 20th Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 17th Mar 2017 8:30 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 17th Mar 2017 7:15 am | RNS | Transaction in Own Shares | 
                                                                            
                                            | 16th Mar 2017 3:45 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 16th Mar 2017 10:08 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 14th Mar 2017 12:55 pm | RNS | Publication of Prospectus | 
                                                                            
                                            | 13th Mar 2017 9:00 am | RNS | Changes to standard GB domestic energy prices |