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
The father-of-two had invasive surgery for a rare tumour in his neck.
If the UK position is rejected, the Government could be faced with a choice between remaining in the Customs Union or accepting a hard Irish
The size of the proposed penalty has not been disclosed.