Following on from this. I've learned from the Cambridge Cycling Campaign, who have been liaising with local MP David Howarth, that an Early Day Motion has been put before the house, opposing the acceptance of the new version of the Highway Code. The objection by MPs to an order before parliament is called a "Prayer for Annulment" and once the EDM prayer is published, there are 20 days from today to get lots of MPs to sign it. It's not clear how many MPs are needed.
The motion is now public: http://edmi.parliament.uk/EDMi/EDMDetails.aspx?EDMID=33216&SESSION=885 so I guess now is the time to encourage your MP to sign up! And do feel free to point other people at this post.
Update: Hmm, I've just been relaying what's been said by the CCC, but it seems from comments that this may be not as useful as it sounds. I'll be passing this back to them for comment.
Update 2: A committee member (who prefers not to be named) says:
My understanding from David Howarth when I spoke to him on Monday is that an EDM prayer (as distinct from a normal EDM) with "lots" of signatories results in a debate being held in Committee, which may then result in a full debate in the HoC.
As far as I can see, it's the only option open to anyone to stop this. That's the procedure there is so we'd better make best use of it. Getting lots of MPs to be aware of the problem is worth trying. It could lead to media interest etc., who knows.