Today I was shopping and a woman had a buggy with two children, looked to be aged around 1 and 3. She was shouting continuously at them for all the time I was around them (5/10 minutes?), calling them idiot and other names, and handling them roughly (pulling out of the buggy by the arm, saying 'Look what you've done, you idiot' etc).
I reported to NSPCC and they encouraged me to report to 101. I have no identifying details other than physical description.
Does anyone have advice on whether reporting to 101 is the right thing to do?