Can hackney drivers prebook fares?

yes

It depends if he owns the Taxi it will depend on the fares he gets, but if he drives a Taxi which belongs to a company, he will be getting a salary depending on the hours and shifts he does

in Japanese the word "ペーパードライバー"(paper-driver) means a man who have the driver's license but never drove on the road.

yes other wise it cant really be called fare trade

"Licence" is the spelling common to Commonwealth countries (Canada, United Kingdom, South Africa, Zimbabwe, etc.". "License" is the spelling used in the United States of America (and may be used in...