Twitter Insects were unleashed in two Byron Burger restaurants

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Byron's branches in Holborn and Shaftesbury Avenue in central London were targeted by protestors who released the swarm of cockroaches, locusts and crickets. The actions were part of a backlash against the burger chain's link to an immigration sting against its own staff. Byron reportedly told their workers that they would be having a training day, but it was reportedly a sting and Home Office officials were at the restaurant ready to arrest staff for immigration offences.

Hayley Chamberlain/WENN Managers at the chain were accused of working with Home Office officials

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The restaurant has been blasted on social media after allegedly collaborating with the Home Office to arrest dozens of its migrant workers earlier this month in a bid to avoid a £700,000 fine. A manager reportedly said at the time of last week’s raid: "We know what's going on and all this was prepared. This is not training."

GETTY The Home Office confirmed they arrested 35 immigrants

Activists from London Black Revs and Malcolm X Movement released a swarm of insects in Byron's Shaftesbury Avenue and Holborn restaurants on Friday. In a joint statement on Facebook, the groups wrote: “London Black Revs and the Malcolm X Movement have taken affirmative action against Byron restaurants chain in response to the Byron restaurants chain's despicable actions in the past weeks having entrapped waiters, back of house staff and chefs in collaboration with UK Border Agency.

Hayley Chamberlain/WENN The restaurant chain has received a backlash on social media