Alan, according to Edge, he was instructed to bring the drawings he had made, from Lickey Grange to the Works to begin constructing three prototypes. That was on April 18. Though we don't have an exact date of completion from Chris's book on Edge, it seems unlikely any of the three cars was completed by the end of April. We do know that on one of the Sundays between April 17 and Whitsuntide, Austin's man, Clinton,and his family, took the one completed successful car to visit their ailing daughter. I'll leave it to Chris to fill in further.
Erich in Mukilteo
Erich in Mukilteo