'The fear among the producers now is that it's impossible to imagine an audience of around 400 people at the recording of a TV show like Red Dwarf, where nobody does a bit of a hint on Twitter, or sneaks a picture on Facebook or posts a bit of badly shot video on YouTube.'
Wow just wow . How about adapting and embracing new technology instead of moving a step backwards ? This confirms still, how old fashioned some in the entertainment industry think. E.g. why not offer a 'live' showing per stream in HD ? If it is a good show and not some _crap_ then why are they so afraid of twitter, youtube, etc etc. Actually if enough people talk positive about it isn't that a bonus for the show? There are many possibilities how to adapt to new models but instead of thinking about the positives of using new models, these types concentrate on the new negatives.
So now live viewers will most likely have tight security before entering the viewing. Leave all electronic devices with security pick up after show etc (same old story). Because some decision makers can't think outside the box.