R (Windsor & Ors) v Bristol Crown Court [2011] EWHC 842

Arising out of a large-scale HMRC investigation into alleged alcohol diversion fraud involving over sixty million pounds, this matter involved a challenge to search warrants. Upon review, the High Court found no reasonable evidential basis for the warrants.
The case offers important guidance: defence practitioners must rigorously scrutinise the factual premises of intrusive powers, insist upon swift and complete disclosure, and challenge any departure from proportionality.
It is a reminder that judicial oversight exists not as a courtesy but as a safeguard of liberty.