Mars Space Ltd (MSL) is a SME established in 2007 and based in Southampton, UK, providing services and consultancy on space and plasma engineering and science. The main areas of expertise lie in space propulsion, in particular electric propulsion, and space environment. Since its incorporation, MSL has been involved in a variety of R&D activities in collaboration with several commercial partners and agencies carrying out the design, manufacturing, testing and modelling of different devices and prototypes. MSL offers high level consultancy in the space propulsion market, helping customers dealing with high TRL device or with new technologies to exploit.