One of the Driver & Vehicle Standards Agency's main roles is to encourage road safety in Great Britain with the intent to improving driving and motorcycling standards. They are responsible for setting the standards of education and training,  they also oversee and carrying out theory and practical driving and riding tests.

 Apply For Your First Provisional Driving Licence

 Book Your Theory Test

 Practice Your Theory Test Online

 Find Your Lost Theory Test Pass Certificate Number

 Book Your Practical Driving Test

The above links will take you to Gov.uk which is the ONLY OFFICIAL driving test booking website.
Other websites offering driving test booking services might charge extra administrative fees on top of the Driving Standards Agency’s (DVSA) fee. 
Those websites are not run by or connected to DVSA or Gov.uk
Kudos Driving School only recommends using the Official Driving Standards Agency website for ALL your driving licence / driving test requirements.

Please Note
Kudos Driving School is not affiliated with the DVSA or Gov.uk