evidence: In 2021, gross disposable household income (GDHI) in the UK grew by 3.6% when compared with 2020; Northern Ireland increased by 4.5%, while England, Wales and Scotland reported increases of 3.7%, 2.8% and 2.6%, respectively. Of the countries and regions classified by International Territorial Levels (ITL1) in 2021, London had the highest GDHI per head where, on average, each person had £31,094 available to spend or save; Northern Ireland had the lowest at £17,636, which compares with a UK average of £21,679. [...] UK total gross disposable household income (GDHI) in 2021 was £1.5 trillion. Of that, 86.4% was in England, 7.4% was in Scotland, 3.9% was in Wales, and Northern Ireland had the lowest share of total GDHI in 2021 at 2.3%. When compared with the size of each country's population, only England had a GDHI per head above the UK average.