The UK reports emissions from three cattle categories. It uses a Tier 2 approach for dairy cows and beef cows, and a Tier 1 approach for all other cattle. A Tier 1 approach is used for all other livestock. For lambs, the UK has adjusted the Tier 1 IPCC default factor to UK conditions. Total emissions from enteric fermentation, enteric fermentation from cattle and enteric fermentation from sheep, and methane and nitrous oxide emission from manure management are identified as key categories in the latest inventory (UK NIR 2017). NIR 2018 used a thoroughly revised, country-specific Tier 2 approach for cattle. This case study describes the countries approach for cattle, swine and sheep.