London mortgage fraud (update 1)

After a telephone conversation with Detective Superintendent Oliver Shaw of City of London police, we can further reveal some of the issues surrounding the current London mortgage fraud investigation.
Firstly, Detective Shaw highlighted that the investigation is not just limited to London, but part of a UK wide program, being run by the Serious Fraud Office. He explained that the police led review will ascertain the fraud geographic hotspots and will also investigate agents, valuers and mortgage brokers. The police are also working closely with the FSA and other government bodies, which hold data on dubious finance brokers and companies which have been prosecuted or struck off their registrar.
So far, the investigation has revealed no complicity from lending institutions. In the past, some bank employees have been known to either sell institutional data to criminals, or to overlook due diligence procedures, presumably for an 'under the table' reward. So far the investigation has highlighted no such activity, focusing mainly on exaggerated mortgage valuations and fraudulent ID documents.
The investigation is likely to conclude 'around Christmas' after which further action will take place. The police are intent on minimizing the problems and putting mechanisms in place to prevent future exploitations. They are also looking to identify the most successful criminal gangs and prosecute them.
Detective Shaw acknowledged that the police are 'well aware' of the economic dangers of potentially flooding an already cooling market with property that were obtained fraudulently. In the early 90's property recession, a similar problem occurred and the property crash forced banks to review their loan books after defaults and repossessions.
When the banks remarketed repossessed properties they achieved prices way under valuations which were originally suggested when the loan was processed. In today's cooling market, the same problem is likely to occur and the banks are currently doing everything they can and looking at every angle in order to mitigate their losses.