This graph shows the make-up of each income group by family type. 

2017-18: The graph shows that 42% of people in the lowest 20% income are single, either with or without children, compared with only 8% of those in the highest 20% income group. a majority of people in the lowest 20% income group are in couple families (55%).

2015-16:  The graph shows that  32% of people in the lowest 20% income group are single, either with or without children, compared with only 8% of those in the highest 20% income group. A majority of people (57%) in the lowest 20% income group are in couple families, a reflection of their greater share (64%) of the overall population.