A demerger is the process through which a single business entity is divided into separate companies or groups of companies. There are a number of motivations behind a demerger, such as resolving shareholder disputes, separating different elements of a business and improving the value of an element of a single business that has previously been eclipsed within the current corporate structure. On account of the rigid legislation governing companies within the UK, it is vital that the correct methodology for carrying out a demerger is used.