I am looking for a Companies House API that allows get tax fraud or avoidance(list of deliberate tax defaulters) data. I couldn’t find this API on the Companies House website. Do they have an API for this? If so, could you please share the link and provide more details?
As far as I know this data is held and published by HMRC, not Companies House. Have you looked at any APIs for HMRC.
As a general point, Companies House is the UK registry of companies and HMRC is the UK tax authority. They are two different bodies with separate systems.