Speakers and other attendees are encouraged to stay for the whole event. We are planning for an extraordinary time.
Where doing so not possible, you are free to attend those sessions which you are able to attend. Though not yet finalised for 2010, in 2009 our timetable provided for 3 speaking sessions of 1h45 to 2h00 per session separated by lunch and tea breaks, commencing at approximately 10am, 1pm and 3:30pm and would expect to run a similar timetable this year.