Wow going through old “up all night” demos! Bringing back a lot of memories ❤️

🚨 TODAY'S THE DAY: #10YearsOf1D 🚨 It’s been a whole decade and @OneDirection still light up our world like nobody else 🌎✨

Happy #10YearsOf1D to One Direction! 🎉 🎉 🎉🎉 We can't believe it's been 10 years since your journey began, but we're so proud to have been part of it. #XFactor #10YearsOfOneDirection

What a journey… I had no idea what we were in for when I sent this text to my Dad ten years ago at this exact time the band was formed. Thanks to everyone that’s supported us over the years and thanks to the boys for sharing this with me #10YearsOfOneDirection

Et voilà joyeux 10 ans de One Direction ;)

Vous écoutez toujours les 1D 10 ans après ? Et sinon vous écoutez quoi maintenant ?

👀😂 And of course, we’ve had LOADS of great moments with the One Direction boys, but I think we can all agree Harry Styles.' ICONIC toilet trip takes the crown... #10YearsOfOneDirection

Can’t believe it’s been 10 years. So many happy memories, people always ask me if we’ll get back together - never say never. I’m waiting by the phone Niall Horan #10YearsOfOneDirection

#10YearsOfOneDiretion #10YearsOfOneDirection 🔥 C'est le jour J 🎉 Aujourd'hui on célèbre les 10 ans d'un des plus grand groupe des années 2010 : One Direction 👍 Rendez-vous à 20h sur #NRJHits 🎤 Rétrospective des clips + les solos pendant près de 4h

Feeling pretty emotional today. 10 years!! Spent the morning watching old interviews and performances. Just wanted to send a massive thank you to ALL of my band mates. What we did together was incredible

Too many incredible memories to mention but not a day goes by that I don't think about how amazing it was. Niall Horan Harry Styles. Liam zayn . So proud of you all individually.

And to the fans. The people who gave us all these amazing opportunities. You are incredible, your unmatched level of loyality is something that makes me really really proud.

Miss it every day!

Happy #10YearsOf1D Day! Relive your favourite One Direction memories here: 1D.lnk.to/10YearsOf1DWeb…

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Search ‘This is One Direction’ on Spotify to stream the enhanced playlist including videos now! open.spotify.com/playlist/37i9d…

It’s the 150 person crew of carpenters, lighting, riggers, sound, stage manager Mill that flew the globe with us. it’s our band, our security boys, tour managers, our managers, our label, Sarah cooking our food for us on the road. Today is a day to celebrate those guys also.

I’ve been struggling to put into words how grateful I am for everything that’s happened over the last ten years. I’ve seen things and places that I’d only ever dreamt of when I was growing up.