Communications with a Solicitor

A point came up recently in a local discussion on which I would like to hear other views.

The situation as I know it ...... a solicitor communicates with a client mostly via email. Letters are sent as attachments as are other documents.

The question arose about the security and privacy of such communications.

The client apparently requested the solicitor to use some secure method, such as encryption.

Apparently the solicitor is either unable or unwilling to do this.

So to the questions .....

Is it a requirement that a solicitor takes all reasonable precautions to maintain security and privacy in communications with a client?

Would part of that reasonableness (if it applies) be to secure email communications so that no one, other than the intended recipient, could read the content of the email and any attachments to it?

I am inclined to the view that a solicitor who willingly uses email as a means of communication should offer a means to ensure the privacy and security of those communications. If the client is unable or unwilling OK, but surely the solicitor should be able, willing, and should even encourage such security?

Your thoughts would be appreciated.

Thanks.