50 Information about the trader or service to be binding
(1)Every contract to supply a service is to be treated as including as a term of the contract anything that is said or written to the consumer, by or on behalf of the trader, about the trader or the service, if—
(a)it is taken into account by the consumer when deciding to enter into the contract, or
(b)it is taken into account by the consumer when making any decision about the service after entering into the contract.
(2)Anything taken into account by the consumer as mentioned in subsection (1)(a) or (b) is subject to—
(a)anything that qualified it and was said or written to the consumer by the trader on the same occasion, and
(b)any change to it that has been expressly agreed between the consumer and the trader (before entering into the contract or later).