The service you supply is very good apart from the private plates you have in the system which you have no control over. When you ring up the customers on my behalf to inquire about their plates and they are not for sale or some other problems. These should be taken off your system.
I bought a plate and am in the process of selling my original plate through National Numbers. They make the whole process very straightforward and quick; they may not necessarily be the cheapest (I saw my purchased plate advertised for a lower amount elsewhere) but are by far the most customer centric company to do business with - hence why I chose to buy the plate from them.
TH06 TAH
Very helpful
T555 MCG
Very good communication excellent
Y666 VNE
Very straight forward no hassle experience with purchase overall handled very professionally
KJC 10W
Clear explanation of the process, reminders given when appropriate and fair estimate of what the cost of my target number plate would be. Can't really fins any area that could be improved.