(1) In this Chapter, except where the context otherwise requires -

"additional voluntary contributions", means voluntary contributions made to a scheme by an employee which are - (i) contributions made under a rule or part of a rule, as the case may be, of a retirement benefits scheme (in this definition referred to as the "main scheme") which provides specifically for the payment of members' voluntary contributions, other than contributions made at the rate or rates specified for members' contributions in the rules of the main scheme, or (ii) contributions made under a separately arranged scheme for members' voluntary contributions which is associated with the main scheme;

"administrator", in relation to a retirement benefits scheme, means the person or persons, established in a Member State of the European Communities or in the United Kingdom, having the management of the scheme, and references to the administrator of a scheme shall be deemed to include the person mentioned in section 772(2)(c)(ii);

"approved minimum retirement fund" has the meaning assigned to it by section 784C;

"approved retirement fund" has the meaning assigned to it by section 784A;