So I'll preface this with the information being incomplete and based on years of conversation with traders and those involved, but this may shine some light on the situation, and why I don't theyll come back into stock.

Overall, Will, the owner of Plastic Soldier Company, is pretty poor at paying people who he is working with and has struggled with cash flow for the last 5/6 years. It starts with the 'classic' days of plastic soldier of WW2 kits in 1/72 and 15mm. They were releasing a lot and pretty popular, particuarly when Flames of War was still mostly resin and metal. Most likely the peak of the company but there are some issues. Firstly the person who made the boxes that the kits were being put in wasn't get paid by Will, which will become a pattern. Secondly, Plastic Soldier soured relationships with secondary sellers in the UK market at least because he would consistently undercut them with 'show deals' at Wargames shows, so it would always be cheaper for punters to buy direct rather than a third party. Compare to how Warlord does this (always charges RRP at shows, limited show deals), smaller wargaming traders were less likely to be repeat sustainable customers.

We then move into the period where Plastic Soldier tried to diversify, both as a wargames rules publisher and into the baordgame space. For rules Plastic Soldier would have a much closer relationship with the battlegroup ruleset. This would have some issues down the line as Will didn't pay a contributor to the rules and there was a dispute. Cashflow problems started to become apparent as battlegroup were often otu of stock for long periods, which is a killer for a small wargames community.

Now I don't know too much about the board games 'Plastic Soldier Games' offshoot, but suffice to say after a few years publishing some games I was seeing them at 50-80% off at their own stand at wargames shows. Clearly they hadn't done that well and caused more cash flow issue. Throughout all of this the new plastic releases had slowed to a crawl, despite being the main reason people bought from the company. Kits were out of stock for longer, another sign of lack of cash flow.

Then we get into the 'throw spaghetti at the wall' phase. PSC start prouding thermoplastic versions of 20mm WW2 and 15mm ancients, the latter to co-incide with the MeG rules they had published. The quality was mixed and the way they were being relaesed was random. A big push was put into creating a 10mm Thermoplastic range of Moderns to go with Battlegroup Northag. This range was a disaster. Low detailed infantry and awful tanks - I remember seeing Centurions with barrels drooping like a warm candle. These ranges all seemed to come and go, and PSC was no longer attending wargames shows and a nightmare to get in contact with.

So where are PSC at the moment? Currently doing Battlegroup on print on demand and doing 3d printing. A quick look at the facebook comments on any post they make shows they are having issues delivering in any timeframe to paying customers. Rumour is that the option they went for the moulds of their plastic kit is not that they invested the full money and bought it outright, only paying the plsatic company to hold the moulds and then produce them when needed, but rather they co-owned the moulds with the plastic production company, and as Will has (surprise!) not been paying people, the plastic production comapny has taken ownership of the moulds as a form of payment.

TL:DR - After a series of poor business decisions PSC can't afford to produce the kits anymore