Made from widely recycled white PET, the new trays are already rolling out across packs of Cathedral City with Pickle and Cathedral City Lunchpack.
The new trays also use up to 33% less plastic and contain as much as 80% recycled content.
The move is the latest in a series of sustainability initiatives from Cathedral City.
Marketing Controller Neil Stewart said: “In the UK, it is our ambition for our consumer-facing packaging to be 100% recyclable by 2022.
“Our research and development team is working incredibly hard to develop new packaging solutions that can be recycled in standard household recycling collections in the future, while providing the same quality, protection and safety as our existing packaging.”