Caiff busnesau sy'n gwerthu nwyddau'n uniongyrchol i'r cwsmeriaid sy'n eu defnyddio eu diffinio fel manwerthwyr. Yr ystadegyn allweddol ar gyfer manwerthu yw'r Mynegai Gwerthiannau Manwerthu (RSI), a gyhoeddir yn fisol. Mae data yn y RSI yn ymdrin â gwariant ar nwyddau yn unig (mewn siopau ac ar-lein). Mae data am wario ar wasanaethau ar gael ym Mynegai Gwasanaethau (IoS).
Retail sales volumes fell by 0.9% in August 2021, following a 2.8% fall in July; however, volumes were up by 0.3% in the three months to August compared with the previous three months, and in August 2021 were 4.6% higher than their pre-coronavirus (COVID-19) pandemic February 2020 levels.
Food store sales volumes fell by 1.2% in August 2021, with some evidence to suggest that the further easing of hospitality restrictions had an impact on sales; people increased their social spending such as eating and drinking at restaurants and bars.
Non-food stores reported a fall of 1.0% in sales volumes in August 2021, driven by falls in department stores (negative 3.7%) and other stores, such as sports equipment and computer stores (negative 1.2%).