From the article: > A Companies House spokesperson said: “A company was registered using characters that could have presented a security risk to a small number

From the article: > A Companies House spokesperson said: “A company was registered using characters that could have presented a security risk to a small number of our customers, if published on unprotected external websites. We have taken immediate steps to mitigate this risk and have put measures in place to prevent a similar occurrence. We are confident that Companies House services remain secure.” No, if you were that easy to inject, your site was not secure to begin with.