Here is the start of my campaign to change the rules in poland,
Charles, have you contacted the Ministry of Transport at the number I gave you? Also, can you confirm your citizenship? If you're British, I may be able to give you the contact number of somebody who can help you if the Ministry decline to give you permission to register a RHD car.
Also, please to get in touch if the Ministry refuse to give you permission. If they do refuse to register a car when there is a clear need for such to be done, it is possible that the EU could force Poland to change its law.