After quite a busy day in between meetings I've finally digested the Hain story and as has been noted by Ben Brogan, "if you drop by [the Progressive Policies Forum] registered address in Wimpole Street, you find the office of the solicitor listed on its company file". That solicitor is listed as McEwen Parkinson.
In the detailed company file it shows that the company itself is solely owned by one shareholder, Mr Gregory McEwen of Chorleywood, presumably one half of the solictors. Does the Parkinson half of the outfit know I wonder? Is Gregory McEwen just a lawyer, or does it go deeper?
I couldn't help but laugh when I googled "Gregory McEwen" and the second link was "Gregory McEwen' Store Front". Alas it was not a confession but just an author's Amazon Store.