Bildon Fascia, a powder coated steel product 25mm across the bottom, 25mm up the back edge where it meets the soffit linings with a 60mm x 18mm timber bead around the top. Failed because the powder coating didn’t have good cut edge performance. Generally very rusty and blistered with a lot of zinc bleed through. Not paintable.
To date their hasn’t been a product to take care of such a huge range of building methods from using Rigs as a cover fascia for old timber fascia through to revamping the troublesome internal systems by converting to external and ALL fascia systems in-between.