[holding answer 30 March 2010]: HS2 Ltd.'s preferred route option passes through the following parliamentary constituencies in force in the present Parliament:
Aylesbury
Banbury
Beaconsfield
Birmingham Erdington
Birmingham Hodge Hill
Birmingham Ladywood
Brent East
Brent South
Buckingham
Chesham and Amersham
Daventry
Ealing, Acton and Shepherds Bush
Ealing North
Holborn and St. Pancras
Hampstead and Highgate
Lichfield
Meriden
North Warwickshire
Regents Park and Kensington North
Rugby and Kenilworth
Ruislip Northwood
South West Hertfordshire
Stratford-upon-Avon
Sutton Coldfield
Tamworth
Warwick and Leamington.
HS2 Ltd.'s preferred route option passes through the following parliamentary constituencies that will come into force in the next Parliament:
Aylesbury
Banbury
Beaconsfield
Birmingham, Erdington
Birmingham, Hodge Hill
Birmingham, Ladywood
Brent North
Buckingham
Chesham and Amersham
Ealing Central and Acton
Ealing North
Hammersmith
Hampstead and Kilburn
Holborn and St. Pancras
Kenilworth and Southam
Kensington
Lichfield
Meriden
North Warwickshire
Ruislip, Northwood and Pinner
South Northamptonshire
South West Hertfordshire
Sutton Coldfield
Tamworth
Uxbridge and South Ruislip
Westminster North.