In Jaggard v Dickinson [1980] Crim LR 717 (QBD, the court confirmed that the test was subjective. Dickinson broke a window in the drunken belief that the house was that of a friend with whom she was staying. Applying the CDA 1971, s 5(3), the court held that Dickinson was entitled to the defence under the CDA 1971, s 5(2)(a), irrespective of whether the belief was reasonable, even, as here, where it resulted from the defendant's intoxication.