Just a few years after winning the biggest majority in almost half a century, that majority is now clearly at risk.
Our party needs urgently to recapture its sense of momentum and its belief in what this country can do.
We need to show how we are making the most of Brexit and we need in the next months to be setting out a pro-growth and pro-investment agenda. We need to cut business and personal taxes - and not just as pre-election gimmicks - rather than endlessly putting them up.
We must not be afraid to be a properly Conservative government.
Why have we so passively abandoned the prospect of a Free Trade Deal with the US? Why have we junked measures to help people into housing or to scrap EU directives or to promote animal welfare?
We need to deliver on the 2019 manifesto, which was endorsed by 14 million people. We should remember that more than 17 million voted for Brexit.
I am now being forced out of Parliament by a tiny handful of people, with no evidence to back up their assertions, and without the approval even of Conservative party members, let alone the wider electorate.
I believe that a dangerous and unsettling precedent is being set.
The Conservative Party has the time to recover its mojo and its ambition and to win the next election. I had looked forward to providing enthusiastic support as a backbench MP. Harriet Harman’s committee has set out to make that objective completely untenable.
The Committee’s report is riddled with inaccuracies and reeks of prejudice, but under their absurd and unjust process, I have no formal ability to challenge anything they say.
The Privileges Committee is there to protect the privileges of Parliament. That is a very important job. They should not be using their powers - which have only been very recently designed - to mount what is plainly a political hit job on someone they oppose.
It is in no one’s interest, however, that the process the Committee has launched should continue for a single day further.
So I have today written to my Association in Uxbridge and South Ruislip to say that I am stepping down forthwith and triggering an immediate by-election.
I am very sorry to leave my wonderful constituency. It has been a huge honour to serve them, both as Mayor and MP.
But I am proud that after what is cumulatively a 15-year stint, I have helped to deliver, among other things, a vast new railway in the Elizabeth Line and full funding for a wonderful new state of the art hospital for Hillingdon, where enabling works have already begun.
