30 Advanced Unit RN

[fearnaught]

Hi, with all the interest in Ian Fleming at the moment, I was reading the history of "T" Force, and the author mentions they had a detachment of 30 Advanced Unit RN , which included Ian Fleming.He states "their predilection for small armoured sorties in front of the main advance showed admirable daring but was sometimes a little difficult to fit into the general plan of "T" Force activities" What insignia did either unit wear, if any? And as a bonus, what was the armour mentioned?