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London group N-Dubz have written a mini autobiography called Against All Odds: From Street Life To Chart Life to hit back at their critics.

Dappy, Tulisa and Fazer say they want to put "everything out there" and be honest and open about their lives.

They say they're sick of the negative press they've been getting lately and want to "set the record straight" about who they are.

In January, Dappy was forced to apologise to a woman for sending her threatening text messages after she contacted Radio 1 expressing her dislike for the band.

Chloe Moody texted The Chris Moyles Show while the band were being interviewed, calling them "losers" and labelling Dappy "repulsive" but got a message back the next day from him saying: "Your [sic] gonna die".

N-Dubz were dropped as ambassadors of anti-bullying charity Beatbullying after the incident.

They also had a go at Elly Jackson from La Roux last October calling her "bitter" after comments she made criticising Tinchy Stryder and R&B music.

In their new book, the double-Mobo award winners talk about being part of gangs and carrying knives.

Tulisa also admits to trying to take her own life on several occasions.