occupational pension schemes must identify one of the participating employers as the principal employer. It is usually the employer establishing the scheme or the parent company in a multi-employer scheme. The scheme's principal employer will have special powers and duties under the scheme's rules, for example, it may have power to agree amendments to the scheme or trigger a winding-up of the scheme.
Related links
multi-employer scheme (multi-employer pension schemes)
Practical Law Dictionary. Glossary of UK, US and international legal terms. www.practicallaw.com. 2010.