I normally work the German side, but as nobody else seems poised to answer, I'll give it a try.
A Company of 12th Tank Battalion fielded five tanks that day:
L.6 'Lilly II', a female Mk.IV, ditched near the road Cambrai - Rumilly, not involved in the tank-versus-tank combat.
L.16 'Lion', a male, hit by German tank, driver killed.
L.9 'Lightning', a male, blown up by crew.
L.12 'Lochiel' hit, another male, disabled, abandoned.
L.8 'Lukoie III', a female, abandoned, but not out of action.
After the action, only one tank rallied, but was unfit for further action. Unfortunately, its call sign isn't given. My guess would be either L.8 (remounted by crew) or L.6 (coming free again), but also L.12 remains a remote possibility.
-- Edited by mad zeppelin on Sunday 17th of September 2017 08:48:21 AM
