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                                            Chairman of Rio Tinto
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of BT
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of BT Group
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of BT Group (2017–2021)
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of BT Group plc
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of British American Tobacco
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of British American Tobacco (2004–2009)
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of British American Tobacco plc
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of Rio Tinto (2009–2018)
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of Rio Tinto Group
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of Rio Tinto plc
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of SABMiller
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of SABMiller (2008–2015)
                                        
                                        
                                         
                                    
                                        
                                            
                                            Chairman of SABMiller plc
                                        
                                        
                                         
                                    
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