Prime minister will bring upbeat message to adversarial Commons after a summer of policy announcements and improved poll ratingsIn line with Andy Burnham’s emphasis on “positivity” (see 9.04am), the Home Office has put out a press release overnight saying that summer small boat crossings have been at a seven-year low this year. The figures aren’t particularly new, and anyone following the story closely will know that small boat arrival numbers have fallen sharply. But these statistics ha