Trax,
Just from experience of being involved in a couple of companies, sometimes the accountant or whoever become the temporary 'directors' / 'secretary'. Normally done when it's not sure how the company will be split and done just to get the company up and running. The 'temporary' directors then step down at the first board meeting and the new 'official' directors/appointments made.
That could then explain the opening moves.
After that D seems to be the sole person responsible. It could be that D intended to resign, but couldn't being the only director (it presumably would have meant the company would have closed) - so maybe the just stepped aside, rather than resigning (you have to lodge specific forms at Companies House to resign - it's not just send ing a letter saying 'I quit'). By doing that though, he would still have had legal responsibilities re the 'proper' running of the company.
Again, I'm not trying to justify what was said as opposed to what happened, just saying what may be a reasonable explanation of what you're seeing.
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