Definitions for "self-employed"
An individual who operates a business or profession as a sole proprietor, partner...
EU citizens who are self-employed have the right to establish themselves and provide their services in all Member States. (See EU citizenship: Right to move and reside freely)
This will usually cover anyone who is not paid under PAYE. In addition, for mortgage purposes, most lenders will class controlling directors as self employed or directors with more than a 20% shareholding. If this applies then the lender is likely to ask to see company accounts and to write to the companies external accountant for proof of income.
Keywords:  svr, survey, variable, standard, rate
Survey SVR (Standard Variable Rate)
A person who operates as a sole trader or as part of a partnership.
In law, the key tests as to whether a person is an employee or an independent contractor include whether the services are carried out by a person on his own account, and the degree of control over the performance of the job.