A total of 19 clients of rogue private eyes will be investigated for illegal activity, the data watchdog has confirmed.
In a letter to Keith Vaz MP, Information Commissioner Christopher Graham said 125 victims were believed to be affected by the companies and individuals under criminal investigation for data protection breaches.
MPs had threatened to release a full list of 102 of those involved if action was not taken.
More top news
A police officer who spent six days crawling the London Marathon in a gorilla costume has finally completed the 26-mile route.
Nicola Sturgeon calls on voters to make sure "Scotland's voice is heard" and not "dragged back by the Tories" in upcoming vote.
Strictly Come Dancing star Louise Redknapp has dismissed speculation she has separated from former footballer Jamie as "completely untrue".