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R v Alexander Wayne Blackman | 
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| Issue:  | 
The approach to unanimous psychiatric evidence that a person’s responsibility for a killing was diminished; whether a conviction for manslaughter should be substituted on the facts. | 
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| Court:  | 
Court Martial Appeal Court | 
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| Reference:    | 
Nos 2016/05551/B1 and 2016/05552/B1 | 
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| Neutral Citation:    | 
[2017] EWCA Crim 190 | 
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| Judge(s):  | 
Lord Thomas CJ, Sir Brian Leveson P, Hallett LJ VP, Openshaw and Sweeney JJ | 
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| Date:  | 
15 March 2017 |