However , no record exists of such a staging .
She was undoubtedly confusing it with the true opening production at the Embassy Theatre in Swiss Cottage ( now London 's Central School of Speech and Drama ) on 8 December 1930 .
However , no record exists of such a staging and she was undoubtedly confusing it with the true opening production at the Embassy Theatre in Swiss Cottage ( now London 's Central School of Speech and Drama ) on 8 December 1930 .