PTC S.A. (currently T-mobile)

Telecommunication operator

Polkomtel S.A.

Telecommunication operator

WSiP S.A.

Publisher of textbooks & education materials

Time Warner Inc.

Media Tentertainment

Phonesat Sp. z o.o.

Telecommunications operator

RST El-net S.A. (currently Netia)

Telecommunication infrastructure operator

Exatel S.A.

Telecommunication operator

HAWE S.A.

Operator of fibre-optic infrastructure

Bellona S.A.

Book publisher

Master Film Ltd

Sound & subtitles studios