Tax officials have been banned from examining material seized from Newcastle United's ground, following a legal challenge mounted by the club.
St James' Park and West Ham United's ground were raided in April by HM Revenue and Customs as part of a £5m National Insurance fraud investigation.
Newcastle's managing director Lee Charnley was among several men arrested and later released without charge.
The ban remains in force until a court hearing on 22 June.
High Court judge Mr Justice Supperstone imposed the ban after lawyers for Newcastle United applied for a judicial review against HMRC.