The Greenhouse Gas Inventories for England, Scotland, Wales and Northern Ireland report, providing data for 2009, were published on 6 September 2011.
Cyhoeddwyd adroddiad Rhestrau Nwyon Tŷ Gwydr Lloegr, yr Alban, Cymru a Gogledd Iwerddon, gyda data ar gyfer 2009, ar 6 Medi 2011.