The groups are Friends of the Earth, the Aviation Environment Federation, the National Society for Clean Air, and the Heathrow Association for the Control of Aircraft Noise.

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"Business as usual is not going to move us towards a carbon neutral world, " said Jeff Gazzard, of the Aviation Environment Federation, who nevertheless welcomes the Davos declaration.

BBC: A hiker looks out over a mountain in Switzerland

The European Federation for Transport and Environment said in a recent report that around 75% of the region's auto makers were failing to improve fuel efficiency and meet the voluntary targets set by the EU, having reduced CO2 emissions by only around 1% from last year.

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Also involved in the round table discussion were Alan Boulton from the Scottish Tenant Farmers' Association, Patrick Krause from the Scottish Crofting Federation and Vicki Swales from Scottish Environment Link.

BBC: Rural Affairs Committee

The Home Builders Federation said it was "still a challenging environment" in which to build homes.

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