Against completely.

One aspect that does not seem to have been covered is the vast increase to traffic and congestion at the London end which is already one of the worst areas for that and the resulting pollution.

Second, they can say what they like now, but common sense shows that there is no way it will stay to the already obscene budget as it's going to take ...15 years?? to build.

Third, it's going to serve such a relatively small number of commuters and businesses and, add the the increased congestion in joining it in London, many will still prefer to use their car!

Fourth, that huge sum of money could be far better invested now in improving the current infrastructure to railways.  The claim that this would cause years of misery for commuters on existing lines is utter bovine.  ALL those routes HAVE to be maintained, improved, upgraded anyway so if more money was put into this now, it will give a much better and improved service around the country that benefits many more areas and communities and businesses and far faster.