WWF

WWF Scotland said progress was still "too slow" and that the reductions "are simply not enough."

Alex Phillips of WWF Cymru said he was "very happy" at the bill's introduction but "it has been more than eight years in the making so is long overdue".

Working with researchers from the UK's Centre for Ecology and Hydrology, a WWF team installed solar-powered greenhouse gas monitoring stations on Hesketh Out Marsh, a saltmarsh in North-West England that has been restored and is managed by the RSPB.

With WWF's ocean conservation specialist, Tom Brook as our guide, we waded through the thigh-high grass to visit the site of the experiment.

WWF has published its first year of findings in a report called The Importance of UK Saltmarshes.