All the companies you mentioned are ok, but as Ethel says, make sure that the quotes you have been given provide the same cover. Also make sure that any adverse information you may have given to Direct Line when you took the policy out, has been given to the prospective new insurers (claims history etc). New policies are invariably cheaper as most companies give a new business discount which will disappear next year. Also consider that it can be helpful to have a good history of no claims with the same company over a period of years. In your case though the difference in premiums would indicate a move is desirable.