 In November 2008 , the appeal bid was rejected by three judges at the Court of Appeal in London . QC Simon Bourne , representing Park , had wanted to call an expert witness to challenge geological evidence used at the trial . Lord Justice Keene said that the new evidence did not raise " a reasonable doubt as to the safety of this conviction " , saying that the geological evidence was only a small element of the " strong circumstantial case against the <unk> " . The new evidence presented by geologist Andrew <unk> concerned the rock found with the body , said to have been from the wall outside the Parks ' house . <unk> argued that the rock was " indistinguishable " from others in the area , and therefore " meaningless " . 
