Speaking at the beginning of the This Week show, the BBC journalist sent a message of a defiance in the wake of the atrocity which claimed the lives of four innocent people.
The spine-tingling speech, in which he labels attacker Khalid Masood a “pathetic, Poundland terrorist in an estate car”, has been widely praised online.
He began by paying tribute to PC Keith Palmer, the officer stabbed to death inside the parliamentary grounds.
Andrew Neil delivered a blistering monologue on the Westminster attack
Do you have any idea who you’re dealing with?
“Keith Palmer had been a copper for 15 years, a husband, a dad, brother, uncle, public servant. Before joining the police, he’d been in the army, defending our nation,” Neil said.
“Yesterday he was murdered defending our democracy, defending the very heart of our democracy from a barbarian at the gate.
“Just doing his duty, reminding us of something we badly needed reminding, that the most important people in this country are not the rich, the powerful, the famous but those who run to confront the enemies of our civilisation while the rest of us are running away. First responders like PC Palmer.
“Brutally stabbed to death by a jumped-up jihadi, not fit to breathe the same air as the man he killed.
“Now I know there are still some ‘Jihadi Johnnies’ out there who think they will eventually triumph because their love of death is greater than our love of life.”
The BBC journalists has been widely praised online for the incredible speech
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A fired-up Neil then turns his attention to the terrorists, reminding them of Britain’s past.
“Do you have any idea who you’re dealing with?” Neil continued.
“This is the country that stood up alone to the might of the Luftwaffe, air force of the greatest evil mankind has ever known.
“If you think we’re not going to be cowed by some pathetic, Poundland terrorist in an estate car with a knife, then you’re as delusional as you are malevolent."
Police named the attacker as 52-year-old Khalid Masood
“Yes, you have the power to hurt us. Sometimes the hurt is more than we can bear – but you cannot defeat us.
“Because for every brainwashed, brain dead Islamist you send to do us harm, we have thousands upon thousands of Keith Palmers. You find them in every walk of life and in every part of the land, they come in all shapes, all sizes, all colours, all faiths. They are the British people and against them you will never prevail.”
The video has been shared thousands of times as social media users praised Neil’s passionate pitch.
London terror attack: Latest pictures Fri, March 24, 2017
4 dead and 40 injured in London terror attack
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Conservative MP Tobias Ellwood (centre) helps emergency services attend to a police officer outside the Palace of Westminster, London
— Jo Gould (@buzzie2011) March 24, 2017
— Tony McCormack (@TonyMcCormack8) March 24, 2017
“Can only echo what has been said, a PM speech by Andrew, amazing, Churchillian!” one user tweeted.
Another wrote: “That man's worth the licence fee on his own.”
A third added: “Awesome, inspiring speech….outstanding work thank you.”
While a forth said: “Bloody heck @afneil this brought a tear to my eye. Great response!!”