Runway31 Quote........"Sharing in this context means broadcasting for others to see not for own personal use"
(Can't they fix this damn quote function?)
Several years ago I was in touch with Ofcom on this subject (in a different context) and here is a precis of the relevant act as applies to our hobby.....
Quote "Under Section 5(1)(b) of the WT Act 1949 it is an offence if a person "otherwise than under the authority of a designated person,
either:
(i) uses any wireless telegraphy apparatus with intent to obtain information as to the contents, sender or addressee of any message whether sent by means of wireless telegraphy or not, of which neither the person using the apparatus nor a person on whose behalf he is acting is an intended recipient;
This means that it is illegal to listen to anything other than general reception transmissions unless you are either a licensed user of the frequencies in question or have been specifically authorised to do so by a designated person. A designated person means:
the Secretary of State;
the Commissioners of Customs and Excise; or
any other person designated for the purpose by regulations made by the Secretary of State.
or:
(ii) except in the course of legal proceedings or for the purpose of any report thereof, discloses any information as to the contents, sender or addressee of any such message, being information which would not have come to his knowledge but for the use of wireless telegraphy apparatus by him or by another person."
This means that it is also illegal to tell a third party what you have heard." Unquote
It's specific and, whilst eyes are often closed, the act is there to be used if needed - as it has been in cases of re-broadcasting of live ATC.
But this is all secondary to the question of why is Airnav giving its customers a hard time, if not in fact a raw deal?