Hillingdon borough petitioners, including the council, Stop HS2 campaigners, ward councillors and residents, have been pushing for an extended tunnel through Ickenham and across the Colne Valley, as an alternative to the viaduct that will be built in Harefield.
But Mr Robert Syms MP, chairman of the HS2 Parliamentary Select Committee, said petitioners arguments were “not convincing”.
In a statement made on July 15, he said: “Importantly the evidence was that a tunnel would not eliminate the impact of construction works in Hillingdon and surrounding areas. It would bring its own set of construction requirements.
“Our main concern is about the impact of construction work in this area. As the tunnel option carries its own set of construction issues, our overall view is that a convincing case for a tunnel instead of the viaduct has not been made.
He said: "We stand by the evidence given by the council and local residents during petition hearings calling for a tunnel through the Colne Valley.
"While the select committee was sympathetic to the arguments we made, there is clearly a political consensus that HS2 must go ahead no matter how poor the case for a high speed rail link is in the current economic climate.
"I can assure you that we will continue to oppose HS2 Ltd's shamefully inadequate proposal to build a viaduct, which has all the financial logic of a plan concocted by the Greek government and a disregard for people and the environment seldom seen the UK.
"Hillingdon Council will continue to oppose this folly in any way possible."
'More needs to be done'
Campaigners are frustrated with the decision and will continue their fight against HS2 while calling on MPs for support.
Nick Hurd, MP for Ruislip, Northwood & Pinner, said he felt “deep disappointment” and believes the committee didn't have good enough information to assess the true cost of a tunnel, compared to the viaduct.
He said: “HS2 numbers were dodgy and incomplete. Our petitions have not been in vain though. The Committee have accepted our argument that more needs to be done to mitigate the horrendous impact from construction on the area.
“They want to look at options around the railhead. They are not convinced by HS2 plans for traffic. They want to see a solution for HOAC. All this is welcome in pushing HS2 to improve their plans, and we must see what emerges. However it feels like a poor compromise compared to the cleanest solution of a tunnel.”
She said: “I've gone in there and petitioned about permanent impacts, noise, visual and environmental destruction and losing people's houses and then to be told we didn't make the case about construction impacts was just bizarre.
"Construction and traffic impact was one part of what we were complaining about. The viaduct is a permanent structure and impact and that's the whole point of our petition and we just feel they've missed the point so we feel there's plenty of room to go back and say they've dismissed an argument – what about the rest of it?”
Speaking on the effect on HOAC, she added: “The obvious solution [to save it] would have been a tunnel, the next obvious solution would be to move it but discussions have been ongoing for years and they're no further forward with it.
"I think they're paying lip service to that and the more they drag their feet on it the worse the prospect for HOAC gets and that would be just be devastating.”
Jeff Creak, principal of the Hillingdon Outdoor Activity Centre (HOAC), said the announcement left him with "extreme disappointment".
He said: “It shows the lack of any value that is put on children's education. The idea that building a train for businessmen to save 10 minutes but at the same time obliterating the opportunities for young people doesn't sound like a good bargain to me."
Mr Creak is hoping for HS2 Ltd to come back with a viable option for a new site, after their suggestion of moving the centre to a lake in Denham, which is half the size, and doesn't “suit sailing at all”.
He added: “We're still working on other angles but unless something new comes out the future is not looking good.”