With any insurance... check the small print as to not only the amount of cover, but the exclusions, lock/locking requirements and the like. You may find, for example, a particular kind/standard of lock is required, that for cover to be in force, the bike must be locked to 'an immovable object' and find out what is/is not considered to be an 'immovable object' That way you're finding out if the cover you think you have is what you have got, or not got, as the case may be.