2007 (Birmingham, UK) 2008 (London, UK) 2009 (York, UK) 2010 (Edinburgh, UK) 2010 (USA) (cancelled) 2011 (Manchester, UK) 2012 (Crewe, UK) 2013 (London, UK) 2014 (Glasgow, UK) 2016 (London, UK) 2017 (Birmingham, UK)
