It appears that the GTA Spokesman is claiming that the "Lassman" reply is the official stance of the Home Office.
He does admit that he doesn't know if the HOC 68/97 has been withdrawn.
Lassman's reply was posted a few posts ago and is contradictory to a reply he put out a few weeks earlier. It's also a cobbled together reply that when the HOC 68/97 is read it's easily seen what it means. The meaning concerning semi-auto's was also confirmed 4 years later by the Firearms Consultative Committee.