Last updated at 07:52

PM promises UK vote on being part of European Union

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The Prime Minister, David Cameron, will make a big speech this morning about the UK's relationship with the European Union.

The EU is the group of 27 countries whose governments work together to make laws which affect all of our lives.

Britain has been a member of this club for 40 years - but some people want to change the way it works.

Today he is likely to offer voters the choice of whether the UK should stay part of the EU or pull out altogether.