"c: weather and navigation transmissions"
i've always wondered about this. surely this can mean ATC too, thus making it legal?
No.
What OFCOM is doing here is defining what services falls under 'general reception', which you are allowed to listen to. Because of that Offense #1 still applies:
Offence 1
It is an offence if a person "otherwise than under the authority of a designated person:
…. uses 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.
This means that while ATC is still legal to listen to as it falls under C for general reception, the
rebroadcast of it (read: streaming) is illegal, because we are not the intended recipient.
In short, nothing has changed since 1949.
BL.