"Certifications must be Ukas accredited. Companies need to do their research. The industry has had a bit of a slap recently and needs to realise that it is not a secular industry," she commented.
RPM's head of production Rory Sloan added that small steps are important.
He talked about an M&S stand that he helped organise at Taste of London, where just marking water bottles with a pen made a saving on wastage by preventing people confusing their bottles with other delegates' bottles.
"We also looked at how much wine it was really necessary to take, and ended up cutting stocks by 50%," he added.
DRP Group's marketing manger Callum Gill warned that ensuring a venue is compliant with your sustainability guidelines is essential because, if it isn't, then it undermines your efforts.
He added that DRP chose to get ISO accredited to help in tender wins. "Our clients are demanding it," he commented.