Some 44 per cent of Irish consumers are buying less from British sites post-Brexit with 16 per cent having stopped shopping at them completely.
This is according to new research carried out by Ipsos MRBI on behalf of the Competition and Consumer Protection Commission (CCPC).
As many as 44 per cent of respondents who had bought from British websites post-Brexit said they experienced problems when making purchases with less than half of these finding a resolution.
Unexpected customs charges and delayed delivery were the most common issues experienced by consumers, the study shows.
The move away from British-based websites presents opportunities for local retailers with a quarter of those surveyed saying they are purchasing more from Irish businesses.
The survey of 1,000 adults was carried out between October 21st and November 29th, 2021.
"The Covid-19 pandemic and Brexit have both had a significant effect on online shopping by Irish consumers. Our research shows there has been a steady growth in online shopping from Irish websites, and a reduction from websites based in the UK," said CCPC chairman Jeremy Godfrey.