The name is Junkers-JU87-B Stuka.
Hope this helps. If you want the Airfix site shows the information about the Stuka.
The link is for the 1:72 scale which is very small and you can barely get any detail on it.
http://www.airfix.com/airfix-product...-stuka-a03030/
You can purchase the model anywhere that does scale models shops i know are Hobbycraft and Laurence Matthews. They have an incredible range it is personally my favourite shop. Also the gadget shops and toy zone shops also sell them.