Turns out it was new bike day at the track too.
Bang Bang's custom BT Edge, in one of only 2 BLACK on BLACK schemes. Polished Shamals, SRM Cranks, Thomson stem and ridiculous 35cm 3T Scatto track bars - for finding the smallest of gaps to split on the track.
All of BT's frames don't have lugs but they are hand built and only made to order. Made in Melburn.