A person shall neither transmit, nor instigate the transmission of, a communication for the purposes of direct marketing by means of electronic mail -

(a) where the identity of the person on whose behalf the communication has been sent has been disguised or concealed;

(b) where a valid address to which the recipient of the communication may send a request that such communications cease has not been provided.

(c) where that electronic mail would contravene regulation 7 of the Electronic Commerce (EC Directive) Regulations 2002; or

(d) where that electronic mail encourages recipients to visit websites which contravene that regulation.