[Closed] Hose shortening new brakes - is a bleed required?

No.

Pop out the pads
Push the pistons out a bit by pulling the lever (not too far).
Unscrew hoses at the lever and snip
Connect then back up with the new olive and insert
Undo the lever fill cap/screw (depending on version)
push the pistons back in
pop the fill cap/screw back in and clean up any oil.

Job done.

Thanks phinw

As phinw says, no bleeding probably required but make sure you have the spare olive and insert to hand. Having to order them from CRC after you've chopped the hose probably needs a bleed 😳