Many of the Operation Nexus's successes have come as a result of posting UK Border Agency officers in 21 custody suites across London.
This now allows UKBA to run real-time immigration checks on individuals bought into custody suites for a crime and establish if they are wanted abroad, have previous convictions abroad or are here illegally.
Nexus also provides UKBA and police with additional tactics.
The sharing of intelligence now supports the removal of cases where previous charges have been dropped due to victims or witnesses refusing to cooperate with police due to intimidation or fear of retaliation.
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.