Screenshot from YouTube video
There were, according to the BBC, six of them armed with sledgehammers.
There was just one of her, armed with...what else, but a handbag.
Video footage of what happened was broadcast on ITV's Anglia Tonight show and, in the way these things are, soon went viral on the Net.
Take a look at the video and you can see exactly what happened; one old lady, dressed in red, rushing across the street and laying into the men without any apparent concern for her own safety.
It was a case of, as the Guardian puts it, once the cavalry arrived "the thugs - twice her size - didn't stand a chance."
Passers-by eventually lost their British reserve and helped hold down one of the men as he fell from the getaway scooter.
Police later arrested three others and were searching for the other two who managed to get away.
Nobody - least of all Super Granny - was hurt, although she wishes to remain anonymous.
"Clearly we will recognise her for her bravery," Peter Chisholm, a local police inspector told the Guardian.
"We won't be releasing her name though," Inspector Peter Chisholm is quoted as saying.
"There might be more members of the gang out there and we wouldn't want to put her in any danger," he added.
The woman has now been named as Ann Timson, who is quoted in the Daily Mail as saying, "My mother’s instinct kicked in and I ran across the road shouting at the lads to stop it. Only then did I realise that they were smashing glass and that it was a raid."