Apologies this question was missed, we dont prefix EW for England/Wales companies. We originally had a full list of pre-fixes but we decided not to use EW, its treated as the default and we prefix the others to differentiate them. Therefore there will be no prefix, we do use EW for jurisdiction which is returned within the CompanyDataRequest but that is slightly different but just in case you saw that element being returned its different from prefixes. Hope that helps.