I was thinking of paying a visit to the show and was wondering if anyone has been to previous shows and if they are worth a visit
The tickets are free but on a first come first served basis and you basically have to leg it to the bottom end as soon as the doors open to get in-line for the tickets. My advice if you want to see a particular lecture would be to arrive early and then go straight to the ticket box office at the opposite end.
You can also reserve a seat online for £5 if you want to guarantee a space.