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A terrifying new wave of dog fighting, organised by teenage gangs using outlawed breeds to resolve disagreements, is a new and worrying trend in the capital.

Later this year, a new bill may be passed in Parliament giving police extra powers to deal with the sinister trend.

But will it be enough? David Akinsanya investigates what's being done to stop London's dangerous dogs in Inside Out, on Monday 9 November at 7.30pm on ³ÉÈË¿ìÊÖ One London.

David Akinsanya reveals some shocking figures showing an explosion of dog-related violence in London over the last 12 months – the number of people hospitalised after a Staffordshire or pit bull attack has grown by 37% and over two thirds of all dog fights involve rivalry between youth gangs.

Both the police and the RSPCA are, understandably, concerned.

Mark Callis, from the RSPCA, tells of a horrifying attack by two pit bull terriers on another dog. He says: "The attack lasted 45 minutes, which is a long and sustained attack… in the end the police called their firearms unit in, and it took four bullets to stop this pit bull, kill it."

David spends some time with the new Metropolitan Status Dogs Unit, specifically established to deal with dangerous dogs and gangs, and finds that they're taking dozens of dangerous animals off the streets every month.

But it's not just about removing the immediate danger posed by these dogs – the new Dogs Unit is actively working in partnership with local authorities and charities to re-educate the public about dog ownership.

Jan Eachus has been working with dogs for over 40 years and believes the best way forward is to register every dog in the country through micro-chipping.

Wandsworth Council agrees with him and is now the first council in the country to introduce compulsory dog micro-chipping on its council estates.

Those who don't register for the scheme are potentially in breach of their tenancy conditions and could even face losing their property as a result.

David also visits a dog sanctuary where some of these dangerous dogs have ended up. For those dogs that have been trained to be aggressive by irresponsible owners, this is the end of the road. The sanctuary has no option but to put them to sleep.

Inside Out is on ³ÉÈË¿ìÊÖ One at 7.30pm on Monday 9 November (London area only) and ³ÉÈË¿ìÊÖ iPlayer

³ÉÈË¿ìÊÖ London Publicity