Labour is planning to use the same Commons procedure that helped remove Liz Truss from Downing Street to force Conservative MPs into a politically embarrassing vote about whether to toughen up rules on sewage discharges.
The party plans to use its regular opposition day motion on Tuesday to push a binding motion, which would oblige the government to set aside Commons time next week for a debate and vote on a Labour bill to impose tougher penalties for sewage spills.