Evening chaps,
I agree, non acknowledgement of a job application is not good practice, (or manners,) but IMHO to preclude another application on those grounds in this instance may be cutting your nose to spite your face.
The core staff have been with the company since the days of Skyplan and I can confirm they are top chaps. Staff turnover may appear fairly high but I would imagine some of the ads you have seen for staff are due partly due to seasonal (temporary) posts which come up - JB?
Anyway, for what it's worth, after 16 years of doing this stuff at various places, I for one hold the Manor Royal boys (and girls) in high regard.