London Guardian 
March 9, 2010
All dogs are to be compulsorily microchipped so that their owners can be more easily traced under a crackdown on dangerous dogs to be unveiled today.
The package will include extending the dangerous dogs law to cover attacks by dogs on private property to protect postmen, and making third-party insurance compulsory so that victims can be financially compensated.
The measures will be set out by the home secretary, Alan Johnson, who will point to rising public concern that “status dogs” are being used by some irresponsible owners to intimidate communities or as a weapon by gangs.
The RSPCA says the number of complaints about dog fights has risen 12-fold between 2004 and 2008. In London alone, police seized 900 dangerous dogs in the last year.