The government was criticised when it emerged that it had spent £9 million sending a pro-EU leaflet to every household in England.
Prime Minister David Cameron and a number of other Ministers are campaigning to keep Britain in the EU ahead of a referendum on June 23 known as "Brexit."
The leaflet says that the EU buys 44% of everything the UK sells abroad, and that leaving the EU would create "uncertainty and risk."
It adds that the EU's single market has a customer base of over 500 million, and that EU companies have invested £540 billion ($768 billion) into the UK over the last decade - about £148 million every day.
Here are the top 6 UK exports to Europe according to the government: