| O'Sullivan, Thomas | Written evidence taken | | Ogden, Mary | Oral evidence taken | | Oldham, Agnes | Written evidence taken | | Oldham, Samuel | Written evidence taken | | Oliver, Ernest | Written evidence taken as part of the Inquiry's Sixth Report | | Oswald, Frances Elaine | Oral evidence taken | | Otter, Enid | Written evidence taken | | Ousey, Margaret | Written evidence taken | | Outwin, David Michael | Written evidence taken as part of the Inquiry's Sixth Report | | Ovcar-Robinson, Konrad Peter | Written evidence taken | | Overton, Renate Eldtraude | Written evidence taken | | Oxley, Phyllis | Oral evidence taken |
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