You can buy artex filler from B&Q and similar DIY shops. I patched up a cracky artex ceiling relatively easily using this. You are right that some old artex contains asbestos but this isn't on the scale of asbestos used as insulation so there is no need to panic. Artex Easifix Wall Repair Kit permanently repairs deep holes, dents and small cracks in plaster and plasterboard walls, providing a smooth finish. The universal wall repair kit contains filler, a repair patch and all the tools needed to get the job done. Textured ceiling repair Using the Artex Easifix Texture Repair Kit If you’ve been afraid to tackle a textured wall or ceiling that’s in need of repair, fear not, this handy guide will show you how to apply and seamlessly blend the texture into the existing pattern, using the Artex Easifix Texture Repair Kit. Screw backer boards above the unsupported drywall ends of the enlarged hole and install the new patch (Photo 2). Mist water over the surrounding ceiling texture in an area about 24 in. Out from the patch to soften it so you can scrape it off to prep for the taping work (Photo 3). Then tape, mud and skim-coat the entire patch.