Is this a joke Paragon?

Today I was sorting through all the various letters I have received from Paragon over the past 10 years or so. I noticed every single letter is signed by Smith, Brown or Browne.

Is this a Joke? Or does everyone who works for Paragon have the surname Smith or Brown?

I expect it's more likely they do not reveal the true identity of staff working at Paragon. Which brings me onto another point. I recently received an email from someone who had been working for a company Paragon took over. After 12 months every single person left the company and I'm told a confidentiality agreement was signed, meaning my informant can't give me the reason why.