Not under the UK definition. Insider trading requires material non-public information. Being in news media means information is now public. However disclosing such information is also an offence. So it's not like you can tweet the info and trade on it now it's public.

Even if the information appeared in a paid subscription publication it is considered public as long as anyone could subscribe to it and it's not prohibitively expensive.

Source: I have enjoyed many many compliance training sessions.