I think you will find the small print on the ticket states your purchase of the ticket is an acceptance that your image may be used for recording / broadcasting of the event (certainly states it on gig tickets)The fuckers didn't ask my permission when they printed a picture of me at Wembley in 2011.
A quick search turned up no similar threads/notices on other forums.
Not sure if it is the same in the UK, but In the USA, If the article is available through an internet source that does not require a log-in, it is in the public domain. As long as the source is cited, it is absolutely legal to use.