4.—(1) The limits on the amounts of deposits imposed by this Order shall not apply to deposits made—
(a)with the approval of the National Debt Commissioners,
(i)by a friendly society being a registered society within the meaning of the Friendly Societies Act 1896 or by a registered branch of such a society;
(ii)by a society being a building society within the meaning of the Building Societies Act 1962;
(iii)by a society registered or deemed to be registered under the Industrial and Provident Societies Act 1965;
(iv)by a charitable or provident institution or society;
(v)by any person in respect of donations or bequests for the maintenance, education or benefit of the poor;
(vi)by a savings club; or
(vii)by a penny savings bank; or
(b)in the Post Office Savings Bank, with the approval of the Postmaster General, by a Government Department or Office; or
(c)by virtue or in pursuance of any enactment in that behalf, by a sheriff clerk in Scotland or a clerk of the Crown and Peace in Northern Ireland.
(2) The National Debt Commissioners and the Postmaster General may attach to their approval referred to in this article such conditions as may seem to them appropriate and may at any time revoke or vary an approval given by them or revise the conditions attached thereto.