"29. . . . first, that it follows from article 2(1) of the Sixth Directive that every supply of a service must normally be regarded as distinct and independent and, secondly, that a supply which comprises a single service from an economic point of view should not be artificially split, so as not to distort the functioning of the VAT system, the essential features of the transaction must be ascertained in order to determine whether the taxable person is supplying the customer, being a typical consumer, with several distinct principal services or with a single service. 30. There is a single supply in particular in cases where one or more elements are to be regarded as constituting the principal service, whilst one or more elements are to be regarded, by contrast, as ancillary services which share the tax treatment of the principal service. A service must be regarded as ancillary to a principal service if it does not constitute for customers an aim in itself, but a means of better enjoying the principal service supplied: Customs and Excise Commissioners v. Madgett and Baldwin (trading as Howden Court Hotel) (Joined Cases C-308/96 and 94/97)[1998] STC 1189 , 1206, para 24."