The Stone-based business is a specialist trade producer of point-of-sale and packaging products. It filed turnover of £16.6m in its most recent results, for calendar year 2022.
An Environment Agency investigation found that Swanline first became obligated in the 2010 registration year, but failed to register until 2021.
“Since then, the company has registered every year and is now compliant with the regulations,” the Environment Agency stated.