| 2nd Mar 2017 7:00 am | RNS | Progess on non core disposal programme | 
                                                                            
                                            | 1st Mar 2017 9:55 am | RNS | Total Voting Rights | 
                                                                            
                                            | 28th Feb 2017 10:43 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 10th Feb 2017 10:31 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 1st Feb 2017 10:10 am | RNS | Total Voting Rights | 
                                                                            
                                            | 1st Feb 2017 9:00 am | RNS | Directorate Change | 
                                                                            
                                            | 27th Jan 2017 11:15 am | RNS | Directorate Change | 
                                                                            
                                            | 9th Jan 2017 11:31 am | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 3rd Jan 2017 9:46 am | RNS | Total Voting Rights | 
                                                                            
                                            | 1st Dec 2016 12:05 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 22nd Nov 2016 3:35 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 16th Nov 2016 4:37 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 2nd Nov 2016 10:20 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 1st Nov 2016 8:58 am | RNS | Total Voting Rights | 
                                                                            
                                            | 27th Oct 2016 7:00 am | RNS | Progress on review and trading update | 
                                                                            
                                            | 21st Oct 2016 9:42 am | RNS | Directorate Change | 
                                                                            
                                            | 14th Oct 2016 1:28 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 3rd Oct 2016 9:13 am | RNS | Block listing Interim Review | 
                                                                            
                                            | 3rd Oct 2016 9:10 am | RNS | Total Voting Rights | 
                                                                            
                                            | 20th Sep 2016 4:12 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 16th Sep 2016 3:30 pm | RNS | Directorate Change | 
                                                                            
                                            | 13th Sep 2016 12:30 pm | RNS | Enterprise PDH litigation | 
                                                                            
                                            | 1st Sep 2016 9:55 am | RNS | Total Voting Rights | 
                                                                            
                                            | 9th Aug 2016 7:00 am | RNS | Half-year results 2016 | 
                                                                            
                                            | 1st Aug 2016 12:54 pm | RNS | Total Voting Rights | 
                                                                            
                                            | 12th Jul 2016 7:00 am | RNS | Two North Sea contract wins | 
                                                                            
                                            | 8th Jul 2016 3:31 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 7th Jul 2016 4:12 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 5th Jul 2016 7:00 am | RNS | Trimble County CCR Contract | 
                                                                            
                                            | 1st Jul 2016 11:33 am | RNS | Total Voting Rights | 
                                                                            
                                            | 29th Jun 2016 7:00 am | RNS | MOD Contract | 
                                                                            
                                            | 28th Jun 2016 10:23 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 22nd Jun 2016 9:25 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 21st Jun 2016 12:22 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 16th Jun 2016 11:05 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 13th Jun 2016 5:08 pm | RNS | Holding(s) in Company | 
                                                                            
                                            | 13th Jun 2016 8:56 am | RNS | Holding(s) in Company | 
                                                                            
                                            | 1st Jun 2016 2:25 pm | RNS | Director/PDMR Shareholding | 
                                                                            
                                            | 1st Jun 2016 8:10 am | RNS | Total Voting Rights | 
                                                                            
                                            | 3rd May 2016 9:07 am | RNS | Total Voting Rights |