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R v Mason and others | 
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| Issue:  | 
Whether a Judge who knew the officer who authorised a covert operation should have sat; whether the recordings should have been excluded for non-compliane with Home Office Guidance | 
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| Court:  | 
Court of Appeal | 
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| Reference:    | 
00/5407, 00/4672, 00/4674, 00/5405 | 
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| Neutral Citation:    | 
[2002] EWCA Crim 385 | 
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| Judge(s):  | 
Lord Woolf CJ, Mitchell and Keith JJ | 
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| Date:  | 
13 February 2002 |