Cambridge Coincidences Collection

Well I Never!

Professor David Spiegelhalter of Cambridge University wants to know about your coincidences!

Why? By recording your coincidence stories here, you can help him build a picture of what kinds of coincidences are out there and which ones seem to ‘get to’ us the most. Your coincidence stories can also help him explore the scientific explanations which may account for them – whether by doing the maths to calculate the chances of a coincidence, or speculating on the weird and wonderful workings of our brains.

Coincidences tend to be ‘surprising matches’ – sometimes they are lucky, sometimes unlucky, sometimes just mind-boggling. To help you recall the coincidences that have happened in your life, here’s a list of some common types of coincidence:

  • Surprising repetitions: for instance when you’ve had not contact with someone for ages, then find two connections to them very close together in time. Or when over several years multiple members of the same family are born with the same birthday. Or even a repetition of a really rare event – like winning the lottery twice, or your life being saved twice by the same person!
  • Simultaneous events: for example when two people phone each other at exactly the same time.
  • Parallel lives: such as when two people in a small group find they share a birthday or an unusual name, or when two people discover their lives match each other in bizarre details.
  • Uncanny patterns: imagine picking letters in Scrabble that spell your name.
  • Unlikely chains of events: perhaps you lost your false teeth overboard and found them inside a fish you caught twenty years later?

If anything coincidental has happened to you - anything that made you stop and say "well, what were the chances of that..?" - then please record your story in the form below! Please try to keep your story personal - about you or someone you know. The only thing we'd ask you to steer clear of are premonitions or déjà vu, purely because - whilst fascinating - they're quite common and also difficult to analyse.

You could also tell us about coincidences in the news, but please provide a link to a reliable source!

Title: two or three words that give a simple description of your story, eg ‘old friend’ or ‘birthday coincidence’
Coincidence: tell your coincidence story - and please include plenty of relevant detail (places, dates, numbers etc.) and include your first name if you want.
Email address (optional): please leave an email address, as then we can get in touch to find out more!

All of the information entered below except your email address will be published on this website when you press save

By ticking this box you agree that your email address can be forwarded to Wingspan Productions Ltd, who are making a BBC television programme about Chance and would like to feature Professor David Spiegelhalter's coincidence collection. In doing so you agree that the producers of the programme may contact you directly to ask you more about your story, though whether you decide to help them is entirely up to you. Your details will not be forwarded to any other party or used for marketing purposes.

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I met a guy who is 4 years younger than me. We are officemates actually. We became closed to each other and at times when were together there is this weird feeling that I am looking on a mirror that I can see my self like my whole personality to him. After 2 months of being very close we discovered many things that are really bizzare about our lives. Like our partners both studied on the same school of the same course. That our anniversaries is June 28.

Wonder why

My husband died two years ago while I was pregnant with our daughter and since then have met nice guys. One in particular and I'm not sure it's my mind playing tricks or if the coincidence actually means something. So my husband went into the hospital October 30 and this new friend/guys birthday is October 30, I met my husband 8 mos after my brother died and I met this individual 8mos after my husbands death.

crazy ball

My son (age 3 at the time) kept tossing a bouncy ball at me. After a few times I tossed the ball into the kitchen. It bounced off a few things and landed right in my lap where my son had tossed it each time before.

Meeting a girl in the same town with the same birthday and year

I met a girl out in town who shared my birthday down to the year, we were both born on the 30th January 1973 and would make us both 41 now, i find this extremely bizarre as we got chatting and there was an instant attraction there and we have remained in contact and we still talk about it even curious as to what the odds of this would be.

Same job, same London flat

At work there were just two other people with the same job title as me in a large organisation. Talking to one of them, who was at least 10 years younger than me, about areas of London we'd lived in, we found out that we'd lived in exactly the same flat about 10 years apart. It wasn't close to the place of work and each of us had moved in only because we had known someone else living there (not a mutual acquaintance).

Birthday Coincidence

Last year I went to dinner with a friend for her birthday. She had invited 3 other women, none of whom I had ever met. Since it was a birthday dinner we were talking about our birthdays, and we found that 3 out of the 4 of us invited shared the same birthday. Not year, only month and day, February 1st, but it was still very coincidental! Angie


I was born on the 27th of the 7th 1942.My housenumber was 7.On the 7th of the 7th 1987 I survived a head on collision in which I broke my neck, and according to my doctor very lucky to have survived.Unbeknown to me my present partner watched me being wheeled into A&E.She was in the hospital waiting for a bed for her husband. He died a few hours later.We met a few years later and were both astonished at the coincidences of sevens.I had divororced and moved into a house numbered 107 and my partner lived in No 7. We now live in No 62

Beyond mere coincidence

I moved across the US 3,000 miles away from a small obscure town in California to a small obscure town in Maryland. On my very first day I went to a local supermarket two miles from the house and as I was walking in the store a man walked out who I recognized. He was a former co-worker who I had last seen two years prior in that small town in California. We were completely floored to see each other.

Places I lived.

1. I was waiting in line at hardware store in Houston when a long plank someone had leaned against the counter slid down and bonked me on the head. I had to sit down for a minute, stunned. After a few minutes, the cashier said he had taken the name and address off the check of the customer whose plank it was (in case i wanted to pursue it, although it should be store responsible, not the customer). I did not want to, but I took a glance at it-- the address was an apartment building I had previously lived at, including the same apartment number. 2. I met a girl in a bar and we were chatting.