High Speed Rail 2 (HS2) has come under fire from the chairman of Britain's first high-speed rail network, in a further setback for officials at the Department for Transport.
Rob Holden claimed that British engineers had been "horrified" by the fact that High Speed Rail 1 (HS1), which links the Channel Tunnel with London, is an 'extension of TGV Nord.
"We need to have a good argument for building HS2 in the first place," he told Rail magazine.
"Someone needs to get a grip of HS2 and manage the engineers."
Proposals to build trains running at 400kph (250mph) have generated considerable opposition from campaigners. They argue the limited flexibility of the route, caused by the need to keep the line relatively straight, will damage the environment and limit mitigation efforts.
Holden added his support to those arguments, stating: "We need to examine why we need a 400kph railway. In my view the UK doesn't need it."
Opponents of the government's plans, which will cost £32 billion and only be completed by 2033, have argued Britain does not need a high-speed rail network because the distance between its main cities is not as great as in other European countries.
"When the person who is running HS1 can't see the point of HS2, it really is well past time for the government to think again," Stop HS2 campaign director Joe Rukin commented.
"The whole problem with HS2 is it came from a starting point of 'we need to do this' without having any strategic thinking besides 'it sounds like a good idea' to arrive at the conclusion. As a result, all the arguments which are used to support the idea have had to be retrofitted after the decision to proceed, which is why none of them fit."
The government is facing a legal setback next month when opponents' legal challenge to its consultation on the high speed line, which will run from London to Birmingham and then to Manchester and Leeds.
High court judges will hear the judicial review case on December 3rd.