Contributor(s): Keir Starmer | As the head of the CPS, Keir Starmer QC has been instrumental in a number of high profile prosecutions and is at the forefront of developments in prosecution policy. Most recently, he has announced his intention to issue guidelines around the prosecution of cases involving social media. Your exclusive chance to put your question to one of the most senior lawyers in the UK, join the debate @LSELaw. Please note: this is an open topic event, however there may be some questions the DPP is unable to answer for legal reasons, for example, on specific on-going cases. Keir Starmer is the director of public prosecutions for the Crown Prosecution Service. He was named Human Rights Lawyer of the Year in 2001 and QC of the Year in Human Rights and Public Law in 2007.