Sections 18–30 of the Landlord and Tenant Act 1985 (LTA 1985) contain the well known legislative scheme for the regulation of service charges charged to residential tenants. LTA 1985 , s 18(1) contains the central definition: ‘(1) In the following provisions of this Act “service charge” means an amount payable by a tenant of a dwelling as part of or in addition to the rent— (a) which is payable, directly or indirectly, for services, repairs, maintenance, improvements or insurance or the landlord’s costs of management, and (b) the whole or part of which varies or may vary according to the relevant costs.’ Although the scheme will be of primary use to long leaseholders of dwellings, unlike other legislation affecting long leaseholders, the rules apply to most types of ‘tenant’, irrespective of the length of their tenancy. A ‘tenant’