We instinctively know that good quality, clean data is likely to lead to better marketing results. What has always been difficult to pin down is exactly what impact data quality has on the bottom line. However, in recent research conducted by Jim Conning’s Data Services team at Royal Mail and DataIQ it has been revealed poor quality contact data is costing organisations a staggering 5.9% of turnover on average. To put this into context, the average large business in the UK turns over £291m so the cost of poor quality contact data for a large business is running at £17.2m annually. The same survey of 272 marketers also found quality of contact data to have the highest impact on campaign [...]