It seems the letter of apology was accepted and that was the end of it. At about the same time my future wife also attended the same school and was able to recall another young lady teacher striking a boy’s hand several times with a snooker cue, which doubled as a pointer and cane. It seems the boy’s hand became swollen like a balloon and was out of use for several days, but again there were no repercussions as far as she was aware.
In the seemingly unregulated world of that time there were many and varied implements used by teachers which most definitely broke the rules and regulations, but this is probably a subject topic all by itself!
I will find the time A_L to put down my other instances/recollections, together with associated anecdotes for the benefit of this forum.
Finally, I don’t consider myself either hard done by or particularly unlucky just a victim of time and place that this forum finally allows me to unload to.