Attachment of commercial lien

Dear Sir or Madam,

I am seeking settlement of an unpaid debt owed by a commercial
entity with significant fixed assets.

It is my understanding that the ultimate way of securing the
liability is by fixing a commcerial lien to the property in
question.

I have heard that the relevant body to discuss this with MAY be HM
Coastguard, however, I am making this request of HM Treasury as
their national financial interests seems to make them a more
appropriate point of contact.

My question is this:-

1. Who oversees the application of commercial liens under English
law? (and Scottish law?)

2. To whom sould an application for a lien against commercial
property be made?

3. Where can I find relevant information regarding the lien
process?

Yours faithfully,

Brian of the Adamson family (neither Sir, Mr or any other
appellation, but a living, breathing, sovereign being)