The cost of HS2 is set to run to over £100,000,000,000, with little benefit to anyone but the fat cats and consultants who have already gouged nearly £5 billion from British taxpayers without an inch of track being laid. There is already high speed rail from London to Birmingham, Manchester, Liverpool, Leeds and Newcastle.
It would be far better is to invest in high speed rail between cities in the north of England. It currently takes 3 hours to travel the 130-mile Liverpool - Manchester - Leeds - Hull route by train. The journey from Manchester - Sheffield, a journey of 40 miles, is also exceedingly slow, taking nearly an hour by 'express' train.
These are routes where high speed rail could reduce journey times in half as well as increasing capacity. With train journey times so long on these routes, it is simply quicker and more convenient to travel by car.