| 22nd Mar 2018 7:00 am | RNS | Depreciation Rate Change Announcement | 
                                                                            
                                            | 15th Mar 2018 5:35 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 8th Mar 2018 4:33 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 6th Mar 2018 4:24 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 1st Mar 2018 7:00 am | RNS | Interim Results | 
                                                                            
                                            | 22nd Feb 2018 7:00 am | RNS | Trading Update | 
                                                                            
                                            | 31st Jan 2018 9:30 am | PRN | Total Voting Rights | 
                                                                            
                                            | 2nd Jan 2018 9:15 am | PRN | Total Voting Rights | 
                                                                            
                                            | 18th Dec 2017 7:00 am | PRN | Trading Update | 
                                                                            
                                            | 7th Dec 2017 12:25 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 7th Dec 2017 12:16 pm | PRN | SAYE share exercises and transfer of Treasury shares | 
                                                                            
                                            | 5th Dec 2017 12:20 pm | RNS | Revised dividend timetable | 
                                                                            
                                            | 5th Dec 2017 7:00 am | RNS | Half-year Report | 
                                                                            
                                            | 16th Nov 2017 11:59 am | PRN | SAYE exercises and transfers of shares held in treasury | 
                                                                            
                                            | 26th Oct 2017 12:14 pm | PRN | SAYE exercises and transfers of shares held in treasury | 
                                                                            
                                            | 25th Oct 2017 10:44 am | PRN | Result of AGM | 
                                                                            
                                            | 25th Oct 2017 7:00 am | PRN | AGM Statement | 
                                                                            
                                            | 11th Oct 2017 7:02 am | RNS | Director Declaration | 
                                                                            
                                            | 5th Oct 2017 4:50 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 5th Oct 2017 12:10 pm | PRN | SAYE exercises and transfer of shares held in Treasury | 
                                                                            
                                            | 4th Oct 2017 7:00 am | RNS | Capital Markets Event | 
                                                                            
                                            | 29th Sep 2017 2:40 pm | RNS | Director Declaration | 
                                                                            
                                            | 26th Sep 2017 9:48 am | RNS | Directorate Change | 
                                                                            
                                            | 21st Sep 2017 4:48 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 21st Sep 2017 12:07 pm | PRN | Treasury Stock and Options Exercised | 
                                                                            
                                            | 20th Sep 2017 3:05 pm | PRN | Notice of AGM and Annual Report and Accounts | 
                                                                            
                                            | 20th Sep 2017 7:00 am | RNS | Result of AGM | 
                                                                            
                                            | 19th Sep 2017 7:00 am | RNS | AGM Trading Statement | 
                                                                            
                                            | 15th Sep 2017 11:28 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 14th Sep 2017 3:34 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 8th Sep 2017 3:28 pm | PRN | Performance share plan grant of awards | 
                                                                            
                                            | 8th Sep 2017 12:14 pm | PRN | Treasury Stock and Options Exercised | 
                                                                            
                                            | 7th Sep 2017 7:00 am | RNS | Full Year Results | 
                                                                            
                                            | 1st Sep 2017 10:25 am | PRN | Blocklisting - Interim Review | 
                                                                            
                                            | 31st Aug 2017 7:00 am | PRN | Notice of Results | 
                                                                            
                                            | 24th Aug 2017 4:41 pm | PRN | Treasury Stock and Options Exercises | 
                                                                            
                                            | 17th Aug 2017 4:24 pm | PRN | Holding(s) in Company | 
                                                                            
                                            | 16th Aug 2017 11:50 am | PRN | Treasury Stock and Option Exercises | 
                                                                            
                                            | 9th Aug 2017 12:14 pm | PRN | Treasury Stock and Option Exercises | 
                                                                            
                                            | 1st Aug 2017 1:41 pm | PRN | Director/PDMR Shareholding (ESMA template) |