Looking for  a luxurious car (with driver) to rent? Jaguar rental is your answer.
Classic Experience offers a wide range of Jaguars (1976-2005), a Range Rover and a gorgeous Citroen DS21 (’73).
The company is located in Belgium and all cars are offered with a driver.
Be sure to check out their site: Classic Experience.

Some of their cars:
Daimler Super V8 (2005)

Jaguar Daimler Super V8 - Classic Experience

Jaguar XK8 (2003)

Jaguar XK8 - Classic Experience

Daimler Six Long Wheel Base (1995)

Jaguar Daimler Six LWB - Classic Experience

Citroën DS 21 (1973)

Citroën DS21 - Classic Experience