The Commissioner, Bernard Hogan-Howe, vowed today the force will become an "implacable enemy" of racists as investigations continue into officers accused of racial abuse.
The Met's policy of 'Stop-and-search' has often left officers open to criti-cism so instead they may now ask suspects for fingerprints before they search them.
But is that any better? Here's Glen Goodman's report.
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Tencho Hristov ignored warnings and got trapped between barriers at Roydon in Essex.
The 6km bike track will include 130m of the South Circular near Kew Bridge.
The unfortunate officer was taken to a central London hospital for treatment and his condition is not life-threatening.