A litter-picking group has found a crisp packet dating back nearly 30 years.
The Walkers crisp packet, which had an expiry date in 1997, was found in the Woodston area of Peterborough.
The Recoup Litter Composition & Pathways Project, based in the city, said the packet remained well-preserved, with little degradation.
A spokesperson for Recoup – an independent authority on plastic recycling – said the find was concerning as it showed how long litter remained in the environment.