Ann: Appointment of Receivers and Managers, page-136

Are you seriously gonna go down the path "management didn't tell us"?
In less than 30 min of research, skimming through announcements and basic financials it's crystal clear that:
AJM has had rope around the neck for over a year now.
Management did incredible job of making AJM's product high quality/low cost. Managing to sell and ship all they were producing when competitors are struggling to sell what they produce even with massive reduction in production capacity.
And still they were in deep $#!¥.
They managed to pull the rabbit out of the hat number of times over the past year to escape Administration even tho they were in breach of debt covenants almost entire time!

You absolutely can't pin this on management! They did their absolute best to keep the company going thus far in environment outside of their control.
If you're doing absolutely everything possible, with maximum success possible in environment outside of your control:
Yet company still have rope around your neck and someone can push the chair under company's feet at any time, even if it performs admirable in tough environment.
The company is walking a tight rope over a cliff.

How on Earth you didn't know or refuse to believe this is beyond my comprehension.
You really have to ask yourself as an investor: How did I manage to miss the huge flashing sign "danger, danger" while looking at it 24/7 over entire year.
You should really use this as learning experience instead of blaming others and not learning anything.
Learning a lesson is the best thing you can achieve from this awful situation