My thanks to Tom Bill from Hamstead Hall for pointing this article out to me:
https://schoolsweek.co.uk/ico-receives-hundreds-of-unnecessary-school-referrals-as-leaders-struggle-with-gdpr/
It is well worth a read and backs up what I have been saying over the last few years... we should only be reporting serious data breaches with minor ones being recorded on an internal breach log. You still need to investigate and take appropriate action, but let the ICO deal with serious incidents!