name is difficult because they may just happen to have the same name as you.....but if they are using your address and car reg then you may have an issue.....If you know which company or if they are using a comparison website then you could contact the company
or if you wish to discuss your suspicions phone them on:
0300 123 2040
Although it is difficult to raise the matter with anyone else unless you have been a victim and can discuss with the insurers involved. You could speak with your own insurers and put them on notice of your suspicions.
I ask because my ex husband was putting me down as main driver and himself as named to obtain cheaper insurance due to his conviction of drink driving. Obviously since separating I do not drive this car anymore and don’t wish to be implicated in any errors on his part