elfnullelf has long-term experience in collaboration with enterprises, associations and institutions from with different backgrounds. We also cultivate a close exchange with members of parliament as well as other officials – in Berlin and elsewhere.

For associations we offer strategic consulting and an office base in the midst of Berlin. The latter can be scaled up to an full-service package. We also accompany our clients on daily bases at their business with politics and the media.

Our services for enterprises ranges from political analysis/monitoring, new strategic approaches up to stakeholder management and implementation of various measures on all policy levels: EU, federal, and urban.

Here you find an abstract of current and past clients:

Bitburger Braugruppe GmbH

Bundesstiftung Baukultur

Bundesverband CarSharing e.V. (bcs)

Bundesverband Deutscher Versandapotheken e.V. (BVDVA)

Bundesverband Patientenindividueller Arzneimittelverblisterer e.V.  (BPAV)

Covestro AG


Hansa Armaturen GmbH

Interessenverband Kommunaler Krankenhäuser in Deutschland e.V. (IVKK)

Klax – Gruppe

Partner für Wasser

Reemtsma Cigarettenfabriken GmbH

Segway Deutschland GmbH

Sportfive GmbH – Sportrechtevermarktung

Verband 3DDruck (V3D)

Verband der Osteopathen Deutschland e.V. (VOD)

Verband der deutschen Rauchtabakindustrie e.V. (VdR)

Verband Deutscher Architekten- und Ingenieurvereine e.V. (DAI)

Votum – Verband unabhängiger Finanzdienstleistungsunternehmen in Europa e.V.


Who are the heads behind elfnullelf? This question we are pleased to answer. You want to know who takes repsonsibility for what issue.

We are a highliy motivated team with degrees in political and communication sciences. Udo Sonnenberg signs primarily responsible.

Udo Sonnenberg, M.A

Executive Partner


Fabian Haun, M.A.

Executive Partner

Paul Henn, MSc.

Public Affairs Consultant

Paul Henn | elfnullelf GmbH

Marian Blok, M.A.

Public Affairs Consultant

Johanna Weirauch, B.A.

Public Affairs Consultant

Jonas Pohl

Consulting Analyst



Public Affairs-Consulting

elfnullelf is a Public Affairs-consultancy in the middle of the parliament and government district of Berlin. The name is cipher and synonym at the same time: Platz der Republik 1, in elfnullelf (11011) Berlin. It is at first quite soberly seen a postal code, the central postal code of the German Bundestag. This is the ciphered part of the name.

elfnullelf describes the main point that the company is caring about: The consultation has the people in view who make political decisions. Political decisions fall in parliaments and administration. But one could also go on and say that there is no company and no organization without political decisions. The synonymous part of the name elfnullelf stands therefore for each organization in which (political) decisions are made and thus it’s very politically.

elfnullelf stands for essentially six thematic areas and five advisory areas: These thematic areas are health care, construction, digitalisation, mobility, consumer goods and financial markets. The advisory areas are political stakeholder engagement, political field observation and analysis, digital public affairs, Business management and organizational structure as well as reputation management.










Health care




Consumer goods

Financial markets

11011 animation-film from 2010 (German).

elfnullelf GmbH Berlin

Albrechtstrasse 13, 10117 Berlin, Germany

elfnullelf is a Public Affairs-consultancy in the middle of the parliament and government district of Berlin.