"a serious debate that would need to happen" - couldn't agree more, but there will be no debate, the usual coteries of Hilary Benn, DEFRA and the government will take the advice of the chemical companies as they always do, and act accordingly.
If there is any "consultation", it will be the usual governmental sham - they'll take the decision, sign the contracts, and then a website will appear "allowing" the public to "make it's contribution"......... many weeks after the original decision has been implemented, anyone who took the time, trouble and effort to contribute will receive a highly patronising email to the effect that "you know nothing, we have acted in your best interests thicko, thank you for your contribution" - got that t-shirt!