To Remove the Sophos Antivirus from a Mac, you have to Log in to the administrator account on the Macintosh computer. After that, click on the "Finder" icon in the dock or in the Application folder to open a new Finder window. You need to Navigate to the Sophos Anti-Virus folder with clicking on "Macintosh HD," "Application Support" and "Sophos Anti-Virus." Then, Click on "Remove Sophos Anti-Virus.pkg" to start the uninstaller. You must follow the instructions provided to uninstall the software.
Next, Search for support files for Sophos Anti-Virus using the search bar in the upper right corner of the Finder window. You should Type in "Sophos Anti-Virus" and remove any files found by dragging them to the Trash in the dock. You can delete these files with emptying the Trash. Forth, restart the computer to allow the changes to take affect.