Among those suspected of dealing with private investigators who broke the law:
- Five retailers
- Four legal firms
- Three insurance companies
- Two financial businesses
- One construction firm
- One security company
A further three private investigators were also included.
Information Commissioner Christopher Graham and his office were initially handed a list of 98 clients of corrupt private detectives by the Serious Organised Crime Agency (Soca).
Among them, 12 firms on the list were found to be no longer trading, while the Information Commissioner's Office (ICO) was awaiting further information on another 11.