BESA - the Building Engineering Services Association is the UK's pioneering trade association for building services engineering contractors – representing the interests of firms active in the design, installation, commissioning, maintenance, control, and management of engineering systems and services in buildings.

Deutsche Messe is an event organizer whose events and services have been bringing together exhibitors and visitors since 1947. Deutsche Messe has helped numerous small enterprises to become world market leaders, while at the same time supporting large-scale enterprises on their road to further expansion. Their expertise is as diverse as their portfolio and helping businesses is their passion.