The Office for National Statistics (ONS) publish data on the ratio of household saving to total available household resources. The latest data indicate that the household saving ratio was 8.6% in Q1 2020, compared to 6.6% in Q4 2019.
The Bank of England publish monthly data on changes in households’ deposits. Households’ deposits increased by £25 billion in May following large increases in March and April. This compares with an average monthly increase of £5 billion in the six months to February.