“‘Electricity agreement’ or ‘agreement’ means an agreement in writing made either before or after the passing of this Act between an Electrical Supply Authority and the owner or lessee of any land outside a borough or town district to which regulation 21–43 of the Electrical Supply Regulations 1935 applied before the agreement was made; being an agreement by which that owner or lessee undertakes to make minimum payments to the Electrical Supply Authority in respect of the electrical energy supplied for any building or installation on that land, irrespective of the quantity of electrical energy so supplied; and includes any agreement which varies or is in substitution for an electricity agreement:”.

“‘Mining privilege’ has the same meaning as in the Mining Act 1926:

“‘Registrar’, in relation to any land (including the land comprised in a mining privilege that is registered under the Land Transfer Act 1952), means the District Land Registrar or the Registrar of Deeds, as the case may require, for the land registration district within which the land is situated; and, in relation to any land comprised in a mining privilege that is not registered under the Land Transfer Act 1952, or in relation to a coal mining lease or coal mining right under the Coal Mines Act 1925 that is registered in the office of a Mining Registrar, means the Mining Registrar in whose office the mining privilege or lease or right is registered.”