The London mayor said it would be “safer and more harmonious” for David Cameron to give ministers free rein.
His comments come amid Conservative tensions over whether ministers would lose their jobs if they campaign for an exit, against the PM’s recommendation.
MPs are currently debating the bill paving the way for an in/out EU referendum for the first time.
Follow the EU Referendum Bill debate live
The EU Referendum Bill, which would authorise a referendum before the end of 2017, is expected to pass comfortably at second reading, its first legislative hurdle in Parliament.
Mr Johnson’s comments came on the day David Cameron faced headlines accusing him of a U-turn after he claimed his comments suggesting ministers would have to back him on the EU vote or quit, were “misinterpreted”.
https://www.endtime.com/wp-content/uploads/2017/06/83493771_de27-3.jpg 371 660 alphatimes https://endtime.com/wp-content/uploads/2020/06/endtime-logo.png alphatimes2015-06-09 00:00:002018-03-28 16:01:35Boris Johnson backs EU referendum freedom for ministers