Right, hopefully I can make some sense of this.
This the last design on the BMC/ERA Project 378 'Maximin' platform and was styled by Dick Burzi.
Pomeroy was the spark that set the entire project in motion although he didn't 'commission' the car as such, nor did he have any input in its design. He suggested to Leonard Lord a variety of criteria that together would make a world-class car from Austin in a time when they (and the British motor industry in general) were seen as lagging behind Europe in technological advances.
The design and engineering work was sub-contracted by BMC to ERA under David Hodkin, who designed and built an advanced air-cooled engine and automatic transmission system mounted on a platform chassis riding on self-levelling air suspension. the original cars was merely a running chassis frame, the second had a crude cobbled-together body, the third a very up-to-date body which was badged as an Austin. the final car had Burzi-styled coachwork and was built by VDP, who were short of work at the time.
More photographs of the finished VDP car and the other two prototypes can be seen in Woodinsight's puzzle for BMC/ERa Project 378.
Hope that clears it up!