UK consumers are likely to be exposed to higher levels of toxic chemicals in their food if the government caves in to the demands of US negotiators in trade deal talks, campaigners have warned.

While much of the public debate around food standards has focused on chlorinated chicken, a new report highlights an array of US farming rules on pesticides and other chemicals that are far more lax than the UK’s.

Pesticide Action Network, Sustain, and Dr Emily Lydgate from the University of Sussex also looked at standards in other countries which UK ministers are keen to sign deals with such as India and Australia.