On 22 May 2009, the OFT published the full text of its decision in the anticipated acquisition by Prince Minerals Limited of Castle Colours Limited. The OFT announced its decision not to refer this merger to the Competition Commission under the Enterprise Act 2002 on 6 May 2009. The OFT found that the merger raises a realistic prospect of a substantial lessening of competition in the supply of non-calcined clay stains. However, it concluded that it was appropriate to exercise its discretion to apply the de minimis exception and the OFT, therefore, decided not to refer the merger to the Competition Commission on the basis that the market affected is of insufficient importance to justify a referral.