Parmenter said that sitting down and discussing the finer details of your event can unearth easy ways to be sustainable and save money.
"We have switched from using a large amount of bubble wrap to designing reusable ‘pillow case’ style holders for our equipment. We've discussed initiatives with our printers and other suppliers. We're also holding video conferences instead of travelling where suitable," he added.
Parmenter also discussed how his company's Easter Fun Day involved staff taking part in team-building activities with Down's syndrome children.
Wilson, meanwhile, warned delegates that the industry is not ready for the sustainable revolution.
"The industry needs to be wary of non-UKAS accredited environmental certificates and those that offer them. An eco consultant cannot also certify. I've seen event companies miss out on million dollar contacts because they were not meeting sustainable standards," she said.
The United Kingdom Accreditation Service (UKAS) tests evaluators and inspection bodies to ensure they have been assessed against internationally recognised standards to demonstrate their competence, impartiality and performance.