Bananas and pineapples are grown in countries of the tropics - Africa, Latin America, Caribbean, Pacific etc. Many countries produce bananas as a staple food and only around 20% of all bananas that are produced are actually exported.
Most bananas and pineapples sold on the British market are exported from Latin America, and increasingly West Africa, as companies relocate in search of ever 'cheaper' fruit, pursuing a 'Race to the Bottom' in terms of social and environmental standards.