Criminal law – Criminal costs. An expert witnesses in a criminal trial did not give their evidence or act on behalf of the prosecution and were not to be regarded as part of the Crown, in particular for the purposes of costs orders under the Prosecution of Offences Act 1985 s 19 and the Costs in Criminal Cases (General) Regulation 1986, SI 1986/1335. Accordingly, the Divisional Court quashed the costs orders in the interested party's favour and found that there had been no proper basis for concluding that the prosecution's expert's error had been improper.