Systems Engineering and Integration Group (SEIG) (formerly the Integration Authority) is a body within Defence Equipment & Support (DE&S) and has overall responsibility for implementing an Architecural Modelling System (AMS) and defining, managing and regulating a new ‘high-level’ system of systems architecture.

VEGA is supporting the UK MoD in the development of a single secure and coherent information infrastructure, the Future Defence Information Infrastructure (DII F).

VEGA supported ESA's Mars Express mission through spacecraft platform operations support, payload operations, mission planning, systems engineering, simulation development.

VEGA was asked by the Private Finance Initiative's lead banks to participate as the lender’s technical advisor during the Skynet 5 PFI evaluation.

VEGA supports the International Space Station (ISS) through ground segment AIV (Assembly, Integration and Verification) support and operations validation planning.

VEGA provided specialist support to the Envisat, Metop, and all current Earth Explorer missions (e.g., Cryosat, ADM-Aeolus, GOCE).

VEGA supported the XMM-Newton mission through the calibration of X-ray and optical instrumentation and design and development of scientific software.

Ulysses is a joint ESA/NASA mission to study the Sun and the heliosphere (the Sun’s atmosphere) in three dimensions. VEGA has been supporting the mission since March 1989.

VEGA has undertaken complete management and delivery of stand-alone software projects for satellite and telecom operator Inmarsat.