 Arup had previously suggested in "Heathrow Hub Arup Submission to HS2" that an site at the Thorney part of Iver, north-east of the intersection of the M25 and M4, could house a railway station of 12 or more platforms, as well as a coach and bus station and a 6th airport terminal.Under this proposal, the high-speed line would then follow a different route to Birmingham, running parallel to existing motorways and railways as with HS1 in Kent.According to Lord Mawhinney's July 2010 report, the Heathrow station should be directly beneath Heathrow Central station (not at Iver, as proposed by Arup) and the London terminus for HS2 should be at the 2018 Crossrail station , not Euston.