UKHL 13
The Court of Appeal in R. v K  EWCA Crim 185,  Q.B. 827 had erred in its interpretation of the reasonable excuse defence under the Terrorism Act 2000 s.58(3). The language of s.57(2) and s.58(3) was completely different: it was impossible to interpret the sections as if they said substantially the same thing.
HL (Lord Phillips of Worth Matravers, Lord Rodger of Earlsferry, Baroness Hale of Richmond, Lord Brown of Eaton-under-Heywood, Lord Mance)