A proposed UK-EU trade deal could restrict glyphosate use on British food crops, forcing farmers to abandon a widely used pre-harvest practice.

Glyphosate, a broad-spectrum herbicide that kills nearly all plant life it contacts, is currently sprayed on wheat, oats, and pulse crops shortly before harvest to desiccate them and simplify mechanical collection. UK farmers rely on this desiccation method across cereal and legume production.

The herbicide faces scrutiny over cancer links. The International Agency for Research on Cancer classified glyphosate as "probably carcinogenic to humans" in 2015, though regulatory bodies including the European Food Safety Authority have reached different conclusions in their assessments. The EU has grown increasingly cautious about the chemical.

Trade negotiations between the UK and EU include regulatory alignment provisions that could harmonize pesticide standards. Stricter EU restrictions on glyphosate, driven by precautionary approaches and political pressure from member states, could extend to British agriculture under such a deal.

The move would reshape harvest practices across the UK grain sector. Farmers currently use glyphosate on roughly 1.5 million hectares annually for pre-harvest desiccation. Alternative methods exist, including direct harvesting of green crops or mechanical drying, but both carry higher costs and operational complexity.

The UK's Health and Safety Executive previously approved glyphosate renewal in 2019, citing available safety data. However, regulatory divergence between UK and EU standards has emerged post-Brexit, and trade agreements often pressure countries toward alignment.

Industry groups including the Agricultural Industries Confederation have warned that restrictions could increase production costs and reduce competitiveness against EU competitors. Environmental advocates counter that precautionary limits protect human health and soil ecosystems from repeated exposure.

The deal's final text remains under negotiation. Any glyphosate restrictions would likely phase