Tory MPs have written to prime minister Boris Johnson warning him that they will rebel over his proposals to extend Sunday trading.

Johnson aimed to relax Sunday trading rules for a year, as one measure to help the country recover from the Covid-19 pandemic, but newspapers including The Telegraph have reported that is now unlikely, although the idea remains “under review”.

A group of Tory MPs said in their letter to Johnson: “We stand squarely behind your ambition to stimulate economic growth and revitalise British high streets, but removing Sunday trading hours will not achieve this.