I need a three panel folding/sliding door, or four panel if three is not possible. The opening is 1.0 mtr wide x 1.85 mtr high. Have you runners that will do this? I can make the doors myself.

As long as your individual door leaves will weigh no more than 7kg each, then I would recommend the Henderson Bi Fold B15 – 4 door kit, which you can cut down to fit the opening.  You can read about it and see the price at the link.  If your doors will be heavier, then you’ll need to look at the Foldaside 100 (2 or 4 door kits only).