As many as 1,500 white Britons are believed to have converted to Islam for the purpose of funding, planning and carrying out surprise terror attacks inside the UK, according to one MI5 source.
Lord Carlile, the Government's independent reviewer of anti-terrorism legislation, said many of the converts had been targeted by radical Muslims while serving prison terms.
Security experts say the growing secret army of white terrorists poses a particularly serious threat as they are far less likely to be detected than members of the Asian community.
It appears that British law enforcement understands how the jihadist threat is evolving and is trying to adapt to match. It remains to be seen whether the public understands the issue, and whether the political class has the guts to back up law enforcement. A silver lining in this story is that it aligns with the political correctness of the political class: now law enforcement is saying that the color of a man's skin isn't the best predictor of his propensity to jihadist murder.