The following is an edited excerpt.

Nick Clegg, the deputy Prime Minister, said he had not “knowingly” fed his children genetically-modified food and the issue needs a “cautious approach”.

Speaking on LBC 97.3 Radio, he sounded a much more tentative note about the idea of GM crops in Britain than either the Prime Minister or Owen Paterson, the Environment Secretary.

“My advice is take cautious steps and be lead by science about GM food,” he said. “I would never say “no” forever – but it needs a cautious approach.”

Read the full story here: Nick Clegg: we should be ‘cautious’ about GM food