The events industry came together to host the biggest-ever One Day at Christmas (ODAC) last Friday. For the first time, five different venues hosted 1,500 elderly, vulnerable and people at risk of spending the festive holidays alone. The event simultaneously took place at ExCeL London, the Business Design Centre (London), NEC Birmingham, SEC Glasgow and Farnborough International. ODAC was started by Mash Media at ExCeL in 2017 and has since grown each year. Mash Media man...