Certified quality and sustainability

GLS ensures, monitors and improves quality and sustainability with a Europe-wide quality and environmental management system.
The company is certified in accordance with DIN ISO 9001:2015 and 14001:2015 by Dekra, one of the largest international issuers of management certification.
As such, GLS meets internationally recognised high standards.


GDP – certified transport of medication

GLS has been awarded GDP (Good Distribution Practice) compliance certification in Belgium, Denmark, France, Germany, Ireland and Spain. GDP guidelines are mandatory for the wholesale of pharmaceuticals across the EU. In six countries, GLS therefore meets the stringent requirements for the safe, hygienic and product-appropriate transport of human medication. It is intended that other GLS companies obtain the certification.

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Seal of approval for quality management

Comprehensive quality assurance at GLS includes precisely defined work processes, quality guidelines with inspection routines and regular audits. Quality indicators are managed on an ongoing basis.

GLS guarantees, checks and improves quality with a Europe-wide quality management system. With its quality management system, GLS meets high, internationally recognised standards according to DIN ISO 9001:2015.

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ISO 9001-14001-E

Seal of approval for environmental management

GLS operates in an environmentally friendly manner and puts sustainability projects into practice at all national subsidiaries. GLS has gained ISO 14001:2015 certification for its environmental management system in all European countries. This globally valid and recognised standard is one of the most important environmental management benchmarks for manufacturing companies and service providers alike.

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EcoVadis CSR Rating 2018

EcoVadis Silver

EcoVadis is a sustainability ratings platform that uses standardised questionnaires and research to evaluate firms’ sustainability commitments. GLS obtained first-time certification at the request of a customer and was then able to achieve EcoVadis Silver during recertification in 2020.

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GLS KlimaProtect

DIN 16258 certification for CO2 per parcel calculation

Within GLS KlimaProtect we calculate the emissions per parcel based on DIN 16258-2013-03 (standard for the calculation of greenhouse gas emissions in transport and logistics). The conformity with the standard was confirmed by the DQS.

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CDP – Carbon Disclosure Project

The Carbon Disclosure Project is a non-profit organisation that collects and publishes companies’ environmental data on the basis of standardised questionnaires. GLS takes part in the annual survey together with its parent company, Royal Mail.