The Rateable Value (RV) of your business premises is set by the Valuation Office Agency (VOA), part of HMRC. It is used to calculate the amount of business rates you should pay.
If you think the RV for your premises is wrong, you should contact the VOA. Their website gives details of how they have worked out your RV and, how to appeal against it. Find and check your business rates here.
Challenging your RV is free, but there are many companies who offer a professional service. You will usually be charged a fee.
Even if you are challenging your RV, you should still pay the business rate demand that you have been sent. If your appeal is successful and you have overpaid, you will be refunded by the council.