You (and anyone who has an interest in the property) can ask for a change in the rateable value. You can do this if you think the circumstances of the property have changed, or if you think that the rateable value is wrong.
It doesn't cost anything to appeal against the rateable value. You do not need to have a rating adviser to represent you in your appeal.
Rating advisers
If you want to pay for a rating adviser to represent you, members of the
Royal Institute of Chartered Surveyors (RICS) and the
Institute of Revenues, Rating and Valuation (IRRV) are qualified to do this and are regulated by rules of professional conduct.
Always check that they have the necessary knowledge and expertise, as well as appropriate indemnity insurance before you employ a ratings advisor.
It is recommended that you seek the advice of a rating adviser who complies with the
Code of Practice (PDF) from rating surveyors developed jointly by the RICS, the IRRV and the Rating Surveyors Association (RSA).
Take great care and, if necessary, seek further advice before entering into any contract.