Buying a car in gerblokey and bringing it to the uk?

My fella is interested in buying a car in germany as he is about to be based there with the army.the cars are a hell of a lot cheaper there. we understand that they are left hand drive but thats fine and are looking at buying one a couple of years old.does anyone know what fees/taxes are involved in bringing a german car to the uk??pros/cons will be most useful.thank you
Answer
I have a friend that brings new cars from gerbloke y to uk about e six months. he has to pay uk vat but can reclaim gerbloke vat. i dont know how it works on used cars and import duty. it might be better to take a rhd car over to gerbloke y and bring it back when he returns. surley there is anybody in his regiment that can advise on this ? nice luck. xx.