In reply, the legal facts are diverse in the UK currently regarding English/Welsh/N.I./Scotland.
The facts are that PPrune whether or not it is a 'private' site may be legally accountable under various legal regimens to provide the 'posters/contributors' information including the internet/I.P. address....FACT!
My post was to offer a solution to that anomaly by providing the above paid-for solution to make sure that one's I.P. address is 'anonymous'.
That effectively means that one can freely post what one wants on any forum worldwide without fear of a supposedly 'private' forum hoster or poster being legally 'sued'.
End of story and legal global current fact!