In a fascinating judgment just published here, Williams J has held that it is in the best interests of Sergei Skripal and his daughter for fresh blood samples to be taken from them for purposes of testing by the Organisation for the Prohibition of Chemical Weapons. The judgment ranges widely over issues of transparency, habitual residence, consular notification in CoP proceedings and constructing best interests in the unprecedented facts of this case. We will provide full coverage in the April Mental Capacity Report.