If I can start by saying once we'd commenced the investigation, because of the potential scale of it right from the outset we involved the as were then Police Complaints Authority, the PCA, pre-IPCC, and the Crown Prosecution Service were involved right at the early stages, so that we had advice and guidance support all the way through as a joint prosecution team, if you like.
Once we'd done the initial searches, huge amounts of data was recovered that had to be painstakingly gone through to find the links back up through the chains.
Data Research is a company in Horley, as you mentioned. They featured very heavily as the third link in the chain, who were instructing the Devon SAS investigations, who were therefore, from that point, asking the police officer or the DWP staff to do the checks for them. And then it would have been interpreted into reports, passed back through the various private investigators, predominantly, as we said, to Data Research in Horley.