Electric Vehicle Number Plates

Sorry to say this but the number plates turned up no problem but after a few days the gel letters have all started to lift. Number plates are as good as unusable. I have emailed the seller but have had no response. I wouldnt mind if they were cheap but they are priced at the top end, and im now going to have to go out and buy some more. Shame as ive ised this guy a few times in the past and his stuff used to be great quality, unfortunately not anymore.