The tabs on the world map provide detailed information by region. You can get deeper into the data by clicking on the named countries on each map or by using the drop down menu. However, as well as providing information on migration of Brits overseas (check out the proportional maps as well as the standard ones), it is also possible to look at immigration from almost every country in the world to the UK and to look at maps showing the distribution of migrants within the UK. When examining data for individual countries, use the link called 'how many people from this country live in Britain' and you will obtain maps like this one...
Think of how you might use this wealth of information so support the work you have done on migration.
