To report the consumption of non-milk extrinsic sugars (NMES) among a low-income UK sample, compare it with nationally representative estimates and examine the association between socioeconomic position and NMES consumption among low income adults.Design Secondary analysis of the Low Income Diet and Nutrition Survey (LIDNS) data.Two thousand, seven hundred and ninety-six adults and 415 young people from 2,477 households.Main outcome measures Mean NMES intakes (grams) and their percentage contribution to food energy, from dietary data collected via a 24-hour recall 'multiple pass' method.The low income sample consumed more NMES than the general population sample. The percentage of food energy from NMES exceeded the 11% target, especially among adolescents (17.2% in males, 16.3% in females). After adjusting for age, men who finished full-time education aged 16 years consumed significantly more sugar (p = 0.028), whereas those who finished aged 18 consumed significantly less sugar (p = 0.023) than the reference group (finished aged 15). No significant associations were found between NMES and socioeconomic variables in women.Compared to the general population, the nutritional disadvantage of the most deprived segments of society relates primarily to excessive NMES consumption. In men, higher educational level appears to play a protective role against high sugar intakes.