Abstract Mars Atmospheric Modelling Has Come Far In The Past Two Decades, With Increased Missions Expanding Our Observational Capabilities Drastically. These Observations Are Allowing Us To Develop Increasingly Accurate Martian Global Climate Models (Hereafter; Gcms) (Forget Et Al., 1999; Read, Lewis And Mulholland, 2015; Martínez Et Al., 2017). There Are Currently Several Well-Established Gcms That Already Model Mars’ Atmosphere, Including (But Not Limited To) The Lmds Mars Gcm, Nasas Ames Mars Model And Openmars. Here We Describe The Usage And First Climate Results From Our Adaptation Of The Met Offices Unified Model (Hereafter; Um), One Of The Most Sophisticated Earth Gcms Already Used For Modelling Exoplanets, For A Martian Climate. By Adapting Established Climate Schemes Used For The Study Of Earth Within The Gcm (E.G. Atmospheric Dust, Wind, Atmospheric Composition, Etc.) To Mars’ Characteristics, We Can Create A Highly Sophisticated Mars Model (E.G. High Spatial Resolution, Dynamic Dust Scheme). Our Simulations Will Be Verified By Comparison With Existing Mars Gcms. The Key Parameters Incorporated Into Our Gcm Will Include: 1. Radiatively Active Dust 2. Orography 3. Martian Orbital Parameters 4. Atmospheric Composition And Pressure 5. Atmospheric H2 O 6. Co2 Ice