Why is England or the UK sometimes called Britain?

"England" is sometimes, wrongly, used in reference to the whole United Kingdom, the entire island of Great Britain (or simply Britain), or indeed the British Isles. This is not only incorrect but can cause offence to people from other parts of the UK.              

Wales 

Scotland

•    England                
• Britain  
                                                                                   

  Great Britain           

                                                     

                                                            

UK

                                              

British Isles