I'll have a stab at answering your question from my understanding of how these things tend to work, but what I say could be wrong. To be sure, talk to a solicitor who specializes in commercial lettings.
I see no basis at all for 'changing the locks overnight'. Even if the property was granted to the creditors in question, or to a receiver, and they responded in that way, you'd have a slam-dunk lawsuit against them.
I would respectfully disagree with the poster who suggested you get out of there ASAP--moving is expensive. There is also the hidden cost of disrupting your clients who will not know, and may not like, your change of location. Don't move unless you have solid advice of risk.
Relax, but do see a solicitor for advice.