This is real.
The email tells you information is going to be sent to your personal address and provides information only, whereas any spam/scam would be asking for you to submit personal details. The email also provides information to security information about the bottom of the email.
Bank emails can be hard to distinguish, although there are still tell-tale signs. First, no bank is ever going to send you an email requesting password information so you can discard all these. Similarly, if you are getting emails from banks that you have never been with or do not have account with, these can also be discarded.
The key is to checking the email address and the links in the email to check these are legitimate, which you can find in the Plusnet guide how to do.
You may find that phishing attempt bank emails also have poor grammar and address you as Dear Customer rather than by your actual name. Again, if you are unsure, make sure to visit the website of the bank and contact them directly to question the information before clicking anything.