"I suspect a more technological answer is what we need - either the composition of the disposable cups being changed so they're more easily recyclable, as it's quite a palaver at the moment, or changing the technology in the recycling."
"I think the Government should take a lead in encouraging research into a better product to begin with or better technology."
On Tuesday, it emerged that fewer than one in 400 paper cups given out by high street coffee chains are being recycled.
The revelations led to Starbucks, Costa, Caffè Nero and Pret being accused of making up claims about recycling which led to people wrongly believing their cups are environmentally friendly.
A Defra spokesperson said: “While the minister acknowledged more needs to be done to recycle coffee cups there are no plans to tax them.”