I missed it but one out of 35 still sounds massively r&d to me. But not surprising really. They have developed the basic tower. Now they need to combine it with a methanol reformer, meanwhile they have the larger versions of the methanol systems to develop, and all of the ammonia fed systems, and work on the liquid cooled systems plus work on AlkaMem to complete. That is quite an agenda and I can see why the r&d team is so large. They are also attempting delivery on a rapid agenda.
The 16 December RNS stated that they had received an ammonia cracker and had been using it to generate hydrogen for use in afc systems at Dunsfold. Nothing about successful integration yet though, or Estonia, and they would need to complete the 200 kW system first.