Any old iron

There are indeed, and whilst there are horses et al there will be farriers.
There will always be the need for ironwork decoration in any event.

The name Pley Forge is on the board: now Smythick Forge, they were of Ashton, but noted as Falmouth Based; operated by two qualified blacksmiths, Lisa Harrison and Dan O'Shea; mostly their work is of mild steel, but they also work in wrought iron. Off the shelf and bespoke.