If you intend to alter your vehicle in any way that makes it different from the standard model, which includes adding non-standard accessories, you will have to contact the insurance company. You will have to provide your insurer with a list of the alterations and accessories along with their monetary value. You also have the option to remove alterations and accessories from your policy by contacting the insurance company.
As we can see, if you're using your vehicle for business use, the best place to start your search for cheap car insurance is Nationwide. By business, we aren't referring to a commercial policy but when you use your vehicle both personally and with some business use. While most companies will have their own versions of these rules, it can encompass delivery drivers or salespeople.