This isn't even limited to the UK. In the US, we have presidents, vice presidents, and presidential candidates all under investigation for mishandling records by running their own e-mail servers. The most charitable explanation being that they don't want to have to deal with separate personal and work devices; the less charitable explanation being "fuck records laws".
I was a federal contractor for NASA and let me tell you about government email: quota of 250MB of storage (2010-2012).
I spent every morning moving emails with attachments to local folders on my Mac (which had no backups) to keep from going over quota. If I went on a 2 week vacation emails would start to bounce to me.
After that fiasco I understood why Colin Powell told Hillary Clinton to just run her own email server (for non-classified communication).
There has been no discussion of the obvious national security risk.
https://www.theguardian.com/law/2022/mar/22/uk-ministers-acc...