at Lisbon Marriott Hotel on 4 Dec 2018 – 8 Dec 2018

at Park Plaza Westminster Bridge Hotel on 26 Sep 2018 – 28 Sep 2018

at Golden Tulip on 12 Oct 2015 – 16 Oct 2015

at QE II on 16 Sep 2015 – 18 Sep 2015

at Queen Elizabeth II Conference Centre on 24 Sep 2014 – 26 Sep 2014