Then click on 'Vehicle Enquiry' on Left Hand Panel...
Third one down from the Home button
You can use this service to check certain information that DVLA holds on its database about a vehicle including:
•year of manufacture
•date of first registration
•expiry date of the current tax disc or SORN declaration
•vehicle excise duty rate
In order to make an enquiry you will need the Vehicle Registration Mark (number plate), and the Vehicle Make. This information can be found on the Registration Document/Certificate, also known as the Logbook.