Despite the huge costs, we must also remember it will bring with it, a heck of a lot of jobs to the country, if it goes ahead!
But will it?
Eurostar re-badged the TGV, and many other countries have existing (working) high speed trains, so the chance that we will do a train design on a blank sheet of paper is about as likely as the APT being revived.
And the influx of European "migrant" workers means the wages can be kept down, and we will then be left with a population of ex-"navvies" who then have no desire to return home and remain here on the bread-line.
So, no benefit for the labour market, and none for the technology; chances are it will be owned by a foreign company (SNCFUK, anyone?) so even the profits will be exported (tax-free, from previous experience!
)
Now, on a car forum, the concept of public transport is somewhat anachronistic, but for me the main thing that prevents me using a public transport option is that more than half of the journey time will be spent travelling (walking) to and from the nearest (sub)node. Add this to the cost, so getting to London costs the same for one person by train as for a car, and adding all the London parking, etc, still is quids-in over public transport for a couple.
Very hard to remain enthusiastic about this from a UK Ltd perspective. But what it cannot export is the benefit to the country.
And for me, apart from reversing the Beeching effect (to reduce the local node distance), this is the aim we should have.