Possibly Parnall
It is possible that this design was also used for for the 1960s Parnall designs, which were based (according to the Which 1960 report) on the Thor Automagic. It does not look like the semi-automatic version to me but it could have been the fully automatic automatic version.
Of course there is no saying that the machine would look identical antway - you only need to look at the Galamatic for that - although clearly based on the Hotpoint Supermatic (and might even have been manufactured here by Hotpoint) the contols are like no supermatic seen here. And there are similarities in the advertising too, as can be seen in the link - from about 35 seconds in - but dont miss them - they are great fun
Al
It is possible that this design was also used for for the 1960s Parnall designs, which were based (according to the Which 1960 report) on the Thor Automagic. It does not look like the semi-automatic version to me but it could have been the fully automatic automatic version.
Of course there is no saying that the machine would look identical antway - you only need to look at the Galamatic for that - although clearly based on the Hotpoint Supermatic (and might even have been manufactured here by Hotpoint) the contols are like no supermatic seen here. And there are similarities in the advertising too, as can be seen in the link - from about 35 seconds in - but dont miss them - they are great fun
Al