Climate change protesters are continuing to blockade the offices of Heathrow Airport operator BAA [part of Ferrovial]...Earlier, there were scuffles between campaigners and riot police and eight people were arrested after blockading British Airways' world cargo centre...[A] spokesman for BAA said..."If they want to spend the night in the car park, as long as they do not interfere with our passengers, we are reasonably relaxed"...Campaigners staged several direct action protests elsewhere on Monday...Five people blocked the main gate at Sizewell B nuclear power station...A dozen protesters superglued their hands to entrance doors at oil firm BP's headquarters...A group invaded the London offices of Bridgepoint Capital, a private equity firm who are behind the expansion of Leeds-Bradford Airport.