Hundreds of campaigners, including fashion designer Vivienne Westwood, will make their voice heard today with a protest at the Department of the Environment.
They are urging Environment Secretary Owen Paterson not to block an EU proposal to suspend the use of certain pesticides.
A vote will take place in Brussels on Monday which will decide whether Europe agrees to introduce a two-year suspension.
More top news
A 16-year-old boy has been arrested on suspicion of terror offences as he prepared to leave the UK.
An man is reported to have wounded at least five people - two seriously - in an attack in the Swiss town of Schaffhausen.
Donald Trump's son-in-law has denied any improper conduct during four contacts with Russians during and after the presidential election.