Traditional grocery product and packaging waste in the grocery supply chain was reportedly decreased 7.4% under the Courtauld Commitment Phase 2 agreement, an increase compared to the expected target of 5%, according to a report from WRAP.
According to the report, the carbon emission was reduced by 10% to 4.8 million tonnes, while the grocery packaging weight reduced by 10.7%.
The cost and efficiency benefits caused due to the reduction of waste are calculated to be about £3.1bn, which includes 3.7% reduction in total household food waste representing 270,000 tonnes of waste.
WRAP CEO Liz Goodwin said during the course of Courtauld 2, financial savings of around £3.1bn were made, by signatories and their customers.
"The final outcome of phase 2 shows how collaborative working achieves results that have financial benefits to the UK and deliver significant reductions in environmental impact," Goodwin added.
"We know there is still more we can do and I'm delighted to see 50 leading retailers, brands and manufacturers signed up to the Courtauld Commitment 3 showing their continued commitment."
During 2012, the avoidable household food waste was decreased by 5.3% that saved £700m to customers and £20m to local authorities along with CO2 savings of about 930,000 tonnes.