Cyber-Warrior (14683 UNIT Field Log)
From Tardis Wiki, the free Doctor Who reference
A warrior-class Cyberman was among the alien entities which came through the Time Fracture to a deserted London in the early morning of 19 August 2020, appearing by St Paul's Cathedral. It was intercepted by military personnel before any engagement with the civilian population could take place. (WC: 14683 UNIT Field Log)
Uniquely, this Cyberman had a completely smooth plate below the chest, whereas most Cyber-Warriors usually had grooved plates. (TV: Ascension of the Cybermen, The Timeless Children)