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simpliest would be thunderbolts or standard screws and plugs, I have never had much luck with shield anchors, but have with resin filled capsules
Thanks for sharing your thoughts. I only have experience with rawl plugs but then that's been for wire rather than anything heavy. The wall is London stock with modern repairs / replacements where the neighbours had a kitchen extension done. My instinct would be to increase the number of fixings rather than try and put heavy duty stuff in designed for concrete?
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London stocks can be tricky, esp if the wall is old and built with soft mortar. You have to choose your fixing points carefully whichever fixing you use — they won't fix into soft mortar, and the brick crumbles easily! I've only seen epoxy capsules used in France (to re-fit window shutters) and they sound like a good idea.
Should be a straightforward job if the wall is sturdy, just have to choose a relevant fixing, simpliest would be thunderbolts or standard screws and plugs, I have never had much luck with shield anchors, but have with resin filled capsules. all depends on how strong it needs to be, but i'm sure others will be along to give better advice!