Environmental campaigners marked the end of a week-long protest at Heathrow Airport with demonstrations at businesses across the country today.

As about 50 protesters remained at a sit-in at the headquarters of the airport operator BAA, close to the perimeter of the west London airport. Other protesters chained and superglued themselves to buildings in central London.

At the headquarters of British Petroleum (BP) in St James’ Square, central London, proteststers blocked two entrances. Four activists linked arms then superglued their hands together at the building’s front doors, while at a side entrance for staff three others glued themselves to the building and used chains around their necks to attach themselves to nearby railings.

Opposite the four-storey building protesters shouted encouragement to their colleagues and held up large banners. One read “Climate Change Profiteers”, another said “Yorkshire’s Floodin Yer Daft Puddin”.

There was a heavy police presence around the building with around six officers backing up paramedics as they used solvents to free the protesters’ glued hands.

Stanley Owen, a spokesman for the demonstrators, said: “This action is in support of the climate camp at Heathrow and the reason for this is to highlight the links between pollution and carbon-emitting industries like oil and aviation.”

While the UK produced 2.5 per cent of global carbon emissions, BP produced 5 per cent, Mr Owen said, adding: “BP make £1 million a minute so any disruption to business is going to have repercussions.”

Protesters who blockaded BP's side entrance were quickly moved but it took a while for the emergency services to remove their colleagues from the front entrance.

Supporters cheered and clapped as the last two protesters were led away.

A BP spokesman said the action had not disrupted work at the headquarters but declined to comment on the activists’ claims about the oil company’s contribution to carbon emissions and climate change.

Protesters said about 20 activists dressed in flat caps and braces also demonstrated outside Bridgepoint Capital, the owners of Leeds Bradford Airport.

Carbon offsetting businesses, which enable companies to pay someone else to reduce the carbon dioxide in the atmosphere on their behalf, were also singled out.

In Oxford, campaigners entered the offices of the carbon offset company Climate Care and handed in a parcel of fish, to symbolise a “red herring”. Joss Garman, said: “We’re doing it because Climate Care are misleading the public, making them believing that carbon offsetting does some good. It’s like being a member of the RSPCA then going home and kicking a dog.”

Other demonstrators dressed as red herrings demonstrated outside the Carbon Neutral Company near King’s Cross, London.

A group of five people also attached themselves to a concrete block outside the Sizewell A and B power stations near Leiston, Suffolk, shortly before 8am. British Energy, which runs Sizewell B, said police are monitoring the protesters and there has been no disorder.

Overnight 1,000 people carried out a peaceful protest at the offices of Heathrow operator BAA. This morning there was a small scuffle as police in riot gear helped a manager get into the building.

A small knot of protesters outside the offices lined up against the riot police for around ten minutes, holding their hands in the air in a surrender pose and declaring: “All we want is to speak to BAA about their role in devastating climate change, and they refused to speak to us yet again. We are peaceful, we have no quarrel.”

After some minutes the police line was called off and officers returned to their normal positions as protesters chanted “Power to the people”.

One of the protesters, Isabelle Michel, said the past 24 hours had been “a great victory”. “There has been no disruption to passengers and the BAA offices are blockaded and we have done that peacefully.” She said that after today’s protest there would be several local projects continuing the fight against a third runway, many of them supporting residents in the flight path who have been campaigning against the development for some time.

Police said 58 people have been arrested during the week-long protest. Of those, 21 were arrested at the airport camp, ten at Biggin Hill airport, ten at the Department for Transport, six close to BAA headquarters and eight at a BA cargo warehouse. Police said the majority of suspected offences were criminal damage, drug possession, weapon possession and assaulting police officers.

Last night police prevented some aggressive groups from joining the protest and three campaigners were arrested

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