Retail Sales Data
ONS Non-Specialised Stores
The Retail Sales Index (RSI) (value, non-seasonally adjusted) measures the performance of Non-specialised stores sales, expressed as annual percentage growth compared with the same month in the previous year. This index measures the value of retail sales in Great Britain on a monthly basis and does not adjust for seasonal variations (e.g. the timing of Easter).
Office for National Statistics
Retail Sales Index
Subscribers can download 10 years' worth of data.