It was within earshot of our very studio - scenes of terror on the streets of London as four people - including a police officer and the attacker himself were killed, and at least 20 others injured, after a terrorist vehicle attempted to enter the Houses of Parliament.
We look back at the events - and the heroes who emerged - from that terrible day.
Stop everything. This lamb is smiling.
Of course that's not the only thing that happened on Wednesday's show - take a look at this little lot below!
Today marks the first anniversary of the terror attacks in Belgium that prompted raised security measures in airports across the world. Now the British government has announced a cabin baggage ban on laptops on direct passenger flights to the UK from six different countries in the Middle East and Africa.
So why has the ban come into force and what does it mean for you? To help answer those questions, we're joined by Simon Calder and security expert Sally Leivesley.
Would you like to get married live on TV?
Have you been hoping to tie the knot this spring? Well, we are looking for a couple to let us help organise and throw their wedding on This Morning!
So if you fancy Gok designing your wedding outfit, Phil Vickery creating your three-course wedding meal and Bryony Blake on the wedding make-up then read on.
This is not a competition - we're looking for couples who want to take part. Both you and your partner must be 18 or over and eligible to marry in the UK. You must be a resident of the UK, the Channel Islands or the Isle of Man.
More details to come soon - chat with your partner, make sure you're both keen on the idea and keep checking this page for more details!
Across the country, today, there are children spending the day in fear. Too frightened to go to school. Too frightened to speak out. Too frightened to tell anyone. Across the country, today, children are being bullied.
As part of 'This Morning's Be Kind' campaign we want you to watch this video. You'll hear from two mums whose children took their own lives as a result of the bullying they experienced. Then hit the pledge button. Pledge to watch this video with your children. Pledge to help your children know they can ask for help, for them to know someone cares and for them to know how important it is to BE KIND.
Since launching our This Morning Be Kind campaign, hundreds of you have got in touch to share your stories of bullying.
In today's phone-in, Dr Ranj takes viewers' calls to offer his advice for coping with bullying, and first up we speak to 'Joanne', who tells us that bullies have made her son afraid to leave the house.
To many, Alice Wells and her young children seem to be a normal family, still coming to terms with the loss of their husband and father 10 years ago. In reality, she holds the dark secret that for many years she was married to a paedophile who abused their own daughter, and became involved in child pornography websites, all under Alice's unsuspecting nose.
Ten years after discovering her husband's horrifying betrayal, Alice has turned her own experience into a book, Eating the Elephant, in the hope that she can help others suffering the same torment. Alice joins Holly and Phillip to talk about her book, what she and her young children have been through, and how she never knew her husband's true colours until it was too late.
Fourteen-year-old Emilie wants to share her experience of the bullying that drove her to self-harm. By speaking out, Emilie hopes that more people will pledge to watch our Be Kind campaign video and help stamp out the kind of bullying that made her life intolerable.
Emilie joins us today alongside her stepdad David Wilson.