A driving instructor's licence is valid only while the holder is in possession of a valid full driving licence to drive the class of vehicle mentioned in the driving instructor's licence.

驾驶教师执照，只在其持有人管有驾驶上述驾驶教师执照所指种类车辆的有效正式驾驶执照时，方属有效。

youdao

Kupka was also found guilty of having another man called Pavel Michalec's driving licence in his possession in September 2009.

BBC: Three men guilty of defrauding migrants in Glasgow