Niger delta communities devastated by giant oil spills from rusting Shell pipelines have unanimously rejected a compensation offer from the company, calling it an insult, and cruel and derisory.

A court in London is now likely to decide how much the Anglo-Dutch firm should pay 11,000 fishermen and others from the Bodo community who lost their livelihoods when the 50-year-old Shell-operated trans-Niger pipeline burst twice within a few months in 2008.

Sources close to the negotiations in Port Harcourt this week suggest Shell offered the communities £30m, or around £1,100 for each person affected. Martyn Day, a partner with the UK law firm Leigh Day who represented the those communities, said Shell's offer was rejected unanimously at a large public meeting in Bodo.

"The amount offered for most claimants equated to two to three years' net lost earnings whereas the Bodo creek has already been out of action for five years and it may well be another 20-25 before it is up and running properly again. I was not at all surprised to see the community walk out of the talks once they heard what Shell were offering."

On Friday the full scale of the spills could be seen from the air with over 75 sq km of mangrove forests, creeks, swamps and channels thick with crude oil. Estimates of how much oil was spilled ranged from around 4,000 barrels to more than 300,000. Communities this week reported that no cleanup had been done and that water wells were still polluted.

Five years after the spills the creeks and waterways around Bodo have an apocalyptic feel. The air stinks of crude, long slicks of oil drift in and out of the blackened, dying mangrove swamps and a sheen of oil covers the tidal mudflats.

"It's everywhere. The wind blows the oil on our vegetable crops, our food tastes of oil, our children are sick and we get skin rashes. Life here has stopped," said Barilido, a fisherman reduced to collecting wood.

Men collect wood in a Niger delta waterway. Photograph: Noah Payne-Frank

Shell, which took a top London negotiating team including a barrister, a QC and other legal experts to the negotiations, had indicated that it wanted to be fair, saying: "We have an interest in sensible and fair compensation being paid quickly to those who have been genuinely impacted by these highly regrettable spills."

A spokesman said: "We took part in this week's settlement negotiations with two objectives – to make a generous offer of compensation to those who have suffered hardship as a result of the two highly regrettable operational spills in 2008, and to make progress in relation to cleanup."

The firm said it was disappointing that a deal had not been reached, but added that progress had been made over the cleanup process. Shell, which works in a partnership with the Nigerian government, had maintained that it had not been able to clean up the spills because the affected Ogoniland communities had insisted on getting compensation first and would not allow it access to the affected areas.

The spokesman added: "The success of any interim measures and final remediation depends on the cessation of oil theft and illegal refining in the area, which reimpacts the environment and remains the cause of most oil pollution in the Niger delta."

Philip Mshelbila, Shell Nigeria's head of communications, said: "One positive from the talks is that the Bodo community has indicated that the cleanup needs to start as soon as possible. I understand that an offer was put. We are very willing to take part in talks about the cleanup."

The men's feet coated in oil. Photograph: Noah Payne-Frank

It emerged this week that Shell had offered the communities only £4,000 shortly after the two spills occurred in 2008-9. "Shell continue to treat the people of Bodo with the same contempt as they did from the start when they tried in 2009 to buy us off by offering the community the total sum of £4,000 to settle the claims," said Chief Kogbara, chairman of the Bodo council .

"We told them in 2009 the people of Bodo are a proud and fiercely determined community. Our habitat and income have been destroyed by Shell oil. The claim against Shell will not resolve until they recognise this and pay us fully and fairly for what they have done."

Chief Tal Kottee, Bodo elected regent, said: "We had been expecting a good settlement from Shell. Our livelihoods here have been totally destroyed. It's an outrage that it has taken so long for a cleanup and to get compensation."

Chief Patrick Porobunu, leader of a Bodo fishing community, said: "Shell is cruel, very wicked. It has given us nothing again. People here are very angry. All we have is poverty because of Shell. We have no electricity, no health. Our suffering goes on."

International and regional groups condemned Shell, which is the largest firm on the London stock exchange with a market capitalisation of £141bn, for what they called its "meanness". They accused Shell of financial racism and applying different standards to cleanups in Nigeria compared with the rest of the world.

"Is it because we are Nigerian and poor that they offer so little for the damage they have caused?" said one fisherman at the Bodo meeting. "This would be different in the US or London." Another added: "Crude is the same in every country. Does the black man not also have red blood?"

"It is a big shame on Shell that they are unwilling to pay a fraction of their profit as compensation after subjecting the people and the environment to such unthinkable harm they would not dare allow in their home country," said the Nigerian environmentalist and chair of Oilwatch International, Nnimmo Bassey.

Pastor Christian, a former fisherman from Bodo, said: "If the money had come, then people would have been able to restart their businesses. I lost everything in the pollution. Now nothing will change and poverty will only increase. This offer was derisory. We don't want our children to suffer again like we did."