I’ve found the solution for all with abs:
Single Banjo Bolt with Bleed Screw, 10mm x 1.25 Thread - Pegasus Auto Racing Supplies
Install the 3an to 3/16 fitting to the top hardline, Remove the BS triumph original. Install the 10mm to 3an banjo fitting with this banjo bolt. Install the 30” 3an line between the two 3an fittings.
Fill the Master cylinder, don’t pull lever. Connect vacuum bleeder to banjo bleed point, suck till you get fluid coming up from the line. Bleed as normal.
Profit.
An ABS bleed routine wouldn’t hurt but I think it can be done without being required.
Will report back