Looks like there is a collaboration going on of some sort. I wonder if there is also data from Interpol, European and Middle Eastern agencies etc.

I would expect that all fingerprint data is available at a price, just like most things.

Data laws need to be upgraded to 2.0, someone call IBM or MS for some help. Or Andersson Consulting, or whatever that dodgy accountancy organisation is called these days.

This "National Identity Register" software / system. Is this a home grown app in the UK, or was it bought from overseas?

If the software was designed in the US, maybe that's why they require FBI style fingerprints to do the comissioning procedure.