Companies registered by tenants at property belonging to me they rent off me

General Discussion

I have just found out through Title Guardian that my problem tenants have opened several companies using that address as their registered address at companies house.   I am very worried about this.   Any advise regarding how to get these companies off my address as registered address?   I hear companies house dont bother to help and can take years to do anything at all to correct things like this but have no experience of dealing with companies house.

The tenants will be written to by my agent but even my agent is not sure where I stand and they are pretty good normally.

These tenants have been recking my bathrooms and all sorts and are agressive as well so i have already served a section 21 for the first time in decades of being a LL.  
I am very worried about any and all ramifications of having companies registered at one of my houses I rent out.  

If anyone has any info as to what issues I may have with this or experience of how to take these registrations off etc I would be grateful to hear from you.
Thank you