Testimonials & Partners

The almost 20 years of cooperation with AC L & S, and in particular with Mr. Athanasios Chatzopoulos, are characterized by the main features that make a business relation a real partnership between two companies: candor, fairness, quality and flexibility. As a result of this Mr. Chatzopoulos has managed to create a climate of reliability and trust, which also his many students from the most diverse areas of our company have come to appreciate, since the successes achieved are real and evident to everyone.

“When I took over the position of Safety Manager at Düsseldorf Airport, it was clear to me that I would be dealing with contacts from all over the world in an international setting. The challenge: to improve my English skills while doing my job. I am grateful for the ways Mr. Chatzopoulos shows me and goes with me – much more than a language trainer, a counsellor and companion in matters of language and speaking, who is always adjusting and adjusting. He showed me early on that it is important to apply acquired knowledge without inhibitions and how I can improve on this ‘journey’. Success is more than just improved English skills – it is the certainty that mistakes that you recognize will help you progress and give you confidence in using the foreign language”.

Selected clients and co-operations

Flughafen Düsseldorf GmbH, Flughafen Düsseldorf Ground Handling GmbH, Flughafen Düsseldorf Security GmbH
Koetter Geld und Wertdienstleistungen (Essen)
Max-Planck-Institut für Kohlenforschung (Mülheim)
Patent- und Rechtsanwaltskanzlei Hübsch, Kirschner & Partner (Köln)
Projector GmbH (Duisburg)
Reederei Jaegers GmbH (Duisburg)
travel-BA.Sys GmbH & Co. KG (Mülheim)
TUI Leisure Travel Service GmbH (Neuss)


Together with our partners, we provide all solutions for language-related issues from a single source. From language training and translation to the creation of your analog and digital media, we offer you everything that is essential for your professional and appealing communication.

Dietmar Fritzsche (Plan_B Media-Dienstleistungen)

Plan_B is actually Plan A, but it is never at a loss for Plan_B. A wide range of services that will give your media – whether analogue or digital – the desired added value and that certain something, from the conception to the final touch.

For further information visit plan-b-media.de.

Gianina Chatzopoulos (Sozial- und Entspannungspädagogin)

Strength lies in calmness.

Autogenic training and relaxation therapy are good for the general well-being as well as for dealing with situation-related stress. Holding a presentation in front of a group of people, conducting negotiations in a foreign language or making a speech in private on a festive occasion – there are a plethora of opportunities and events that you will enjoy with confidence once you have experienced how to act confidently and calmly.

Our customers’ industries are diverse and at the same time testify to the diversity and flexibility of our services. We learn together with our customers and our customers learn from us. In this way, we focus and specialize, while our “students” benefit by achieving excellent results. The results of many years of fruitful cooperative work give our clients the reliable feeling of being in good hands.