Read: David Cameron’s letter to Donald Tusk outlining EU reform proposals

Downing Street has released the long-awaited letter from the Prime Minister to Donald Tusk, president of the European Council — outlining the four areas in which he would like to negotiate a new settlement for Britain. Here are the key parts of the letter, outlining the areas David Cameron is keen to reform:

1. Economic governance

‘What we seek are legally binding principles that safeguard the operation of the Union for all 28 Member States — and a safeguard mechanism to ensure these principles are respected and enforced. These principles should include recognition that:

• The EU has more than one currency.
• There should be no discrimination and no disadvantage for any business on the basis of the currency of their country.
• The integrity of the Single Market must be protected.
• Any changes the Eurozone decides to make, such as the creation of a banking union, must be voluntary for non-Euro countries, never compulsory.
• Taxpayers in non-Euro countries should never be financially liable for operations to support the Eurozone as a currency.