Europeans and their Dependants
The European Economic Area (EEA) includes thirty countries. Nationals of the old EEA and Switzerland are automatically able to work in the UK without restriction. If you are a national of an A8 country, and wish to work in the UK you need to apply under the Worker Registration Scheme (WRS). If you are a national of an A2 country and you wish to work or study, you must apply for permission, and be issued with a Registration Certificate or Accession Worker Card before you commence either your work or studies.
If you are an EU national excercising treaty rights in the UK you may be able to bring your family to the UK. People who are married to, or in a civil partnership with an EU citizen are eligible to apply for an EEA Family Permit. Unmarried partners, fiancés, and fiancées also have entitlements. Applying for an EEA residence permit entitles EEA nationals and dependants of EEA nationals to the right of residence.
ECAA Agreement
The Ankara Agreement is the EU's agreement with Turkey. The agreement, made in 1973, is also referred to as the ECAA agreement.
The Ankara Agreement allows Turkish nationals to run a business/businesses that they have set up in the UK. The agreement prevents EU member states from putting any rules in place that restrict the rights of Turkish nationals that are laid out in the Ankara Agreement. This is called the "standstill clause".

