You must notify the person you share data about, of:-
which information you collect
your name and address
the purpose for which the information is being collected
whether the supply of the information is voluntary or mandatory and the consequences of failure to provide the information
any particular law authorising or requiring the collection of the information
your intention to transfer the information to a third country
the recipients of the information
the right of access to, the right to rectify and the right to object to the processing of the information, and the right to lodge a complaint to the Information Regulator and the contact details of the Information Regulator.