IES is certified by:
- Lloyd’s Register, an international certification body recognized by ACCREDIA for quality certification: UNI EN ISO 9001:2015 ACCREDIA and UNI EN ISO 9001:2015 UKAS
- certiW, an international certification body recognized by LATTAK for occupational health and safety: UNI EN ISO 45001:2018
In addition, IES has been qualified by Lloyd's Register as a Qualified Agency for the provision of all Industry Division services in both the industrial and marine sectors since 2014.
IES also boasts a ++ star for the rating of legality.