Railtrack And Other Letters

I have a boast to make: I am a Railway Enthusiast - a veritable Anorak.
So, when I noticed that Railtrack PLC (a Public Limited Company incorporated in England and Wales on 28th of February 1994) had re-registered as a Private Limited Company (on 3rd February 2003) and was now known as Network Rail Infrastructure Limited), it occured to me that the company name Railtrack was available.
Accordingly, I registered Railtrack Limited on 8th of May 2003. This may not have been a good idea.
Since then, I've been plagued with correspondence, mainly from incompetents in the legal profession, who don't know how to do a basic company search and seem to think that Railtrack Limited are responsible for, if not the Woes of the World, at the very least those besetting the UK's railway industry.
As you will see, Railtrack Limited has been joined and will continue to be joined by a number of sister companies. No doubt my wastepaper bin will never falter...