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- Chenyang MaDoctoral Student
- Jeffrey MakDoctoral Student, Departmental Lecturer
- Alicja (Ala) MaksymiukDoctoral Student
- Shreshth MalikDoctoral Student
- Julian ManyikaDoctoral Student
- Andrew MarkhamProfessor of Computer Science
- Tracy MarshallGraduate Studies Officer
- Andrew MartinDirector of Professional Programmes, Professor of Systems Security
- Agustín Martínez SuñéResearch Associate
- Ivan MartinovicProfessor of Computer Science, Acting Head of Department of Computer Science
- Jodie MattioliGraduate Studies Assistant
- Alastair McCulloughDoctoral Student, Teaching Assistant
- Dylan McDermottSenior Research Associate
- Amine M'CharrakDoctoral Student
- Emma McMillianDoctoral Student
- Tom MelhamProfessor of Computer Science
- Xandru MifsudDoctoral Student
- Katherine MilesDeputy Head of Administration and Finance, (on maternity leave)
- Peter MillicanAssociate Member
- Peter MinaryAssociate Professor of Computer Science
- Yongyao MoDoctoral Student
- Valentin MohlDoctoral Student
- Viggo MoroDoctoral Student
- Matthew MorrisDoctoral Student
- Boris MotikProfessor of Computer Science
- Karan MukhiDoctoral Student
- Andrzej MurawskiProfessor of Computer Science