Advertising – Comparative advertising. Sainsbury's sought judicial review of the decision of the defendant Independent Reviewer of Advertising Standards Authority Adjudications that there had been no substantial flaw in a decision of the first interested party, the Advertising Standards Authority (the ASA) with respect to Tesco's price comparison scheme. The Administrative Court, in dismissing the application, held that the Independent Reviewer had not been wrong in law or Wednesbury unreasonable in concluding that the ASA's decision had not been substantially flawed.