Whatever you chose to do, consider putting a small sticker or piece of insulation tape on one corner of your new plate, not to distort any letters but to make it noticeable if caught on a CCTV or anpr camera. So if you get a ticket come through you can show it's not your plate, often the advice police give. As said most likely placed on a similar bike for the commission of crime. Out of interest has your bike been recently purchased or any pictures of it on social media with ur number plate on display? Oh sorry just seen the notification on it, no had it a while and hardly post anything to social media and certainly not with my number plate. Haven't bothered with screws but someone snapped the steering lock off not top long ago, had to get a new lock set as couldn't turn the key. Reported to police again but no further trouble