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                            | Interim Results 2019 |  | 
                        
                          
                            | 2019 Annual Report and Accounts |  | 
                        
                          
                            | Preliminary Results 2019 |  | 
                        
                          
                            | Interim Results 2018 |  | 
                        
                          
                            | Annual Report 2018 |  | 
                        
                          
                            | Preliminary Results 2018 |  | 
                        
                          
                            | Interim Results 2017 |  | 
                        
                          
                            | Annual Report 2017 |  | 
                        
                          
                            | Preliminary Results 2017 |  | 
                        
                          
                            | Interim Results 2016 |  | 
                        
                          
                            | Annual Report 2016 |  | 
                        
                          
                            | Preliminary Results 2016 |  | 
                        
                          
                            | Interim Results 2015 |  | 
                        
                          
                            | Annual Report 2015 |  | 
                        
                          
                            | Preliminary Results 2015 |  | 
                        
                          
                            | Interim Results 2014 |  | 
                        
                          
                            | Annual Report 2014 |  | 
                        
                          
                            | Preliminary Results 2014 |  | 
                        
                          
                            | Interim Results 2013 |  | 
                        
                          
                            | Annual Report 2013 |  | 
                        
                          
                            | Interim Results 2012 |  | 
                        
                          
                            | Annual Report 2012 |  | 
                        
                          
                            | Interim Results 2011 |  | 
                        
                          
                            | Annual Report 2011 |  | 
                        
                          
                            | Preliminary Statement 2011 |  | 
                        
                          
                            | Interim Management Statement - July 2010 |  | 
                        
                          
                            | Annual Report 2010 |  | 
                        
                          
                            | Preliminary Statement 2010 |  | 
                        
                          
                            | Interim Statement 2009 |  | 
                        
                          
                            | Annual Report 2009 |  | 
                        
                          
                            | Interim Statement 2008 |  | 
                        
                          
                            | Annual Report 2008 |  | 
                        
                          
                            | Interim Statement 2007 |  | 
                        
                          
                            | Annual Report 2007 |  | 
                        
                          
                            | Interim Statement 2006 |  | 
                        
                          
                            | Annual Report 2006 |  | 
                        
                          
                            | Interim Statement 2005 |  | 
                        
                          
                            | Annual Report 2005 |  | 
                        
                          
                            | Interim Statement 2004 |  | 
                        
                          
                            | Annual Report 2004 |  | 
                        
                          
                            | Annual Report 2003 |  | 
                        
                          
                            | Annual Report 2002 |  | 
                        
                          
                            | Annual Report 2001 |  | 
                        
                          
                            | Annual Report 2000 |  | 
                        
                          
                            | Annual Report 1999 |  |