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

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…

when I met these four gents there was no way I thought we would go on to do what we did. So many unbelievable memories we shared together. We felt the adoration of millions from around the planet on a daily basis and it was mind blowing.

It’s such a major part of our lives and always will be. Cheers to US today boys and thank you to all you beautiful people who have supported us over the last 10 years. Liam Harry Styles. zayn Louis Tomlinson ❤️ #10YearsOfOneDirection

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.

And for that, I will be forever thankful. I just can’t believe it’s been ten years. Thank you to our crew, our team, and everyone else who helped us along the way. To all the fans, I love you, and I thank you with all my heart. You did it all, and you changed everything.

And finally.. to the boys, I love you so much, and I couldn’t be prouder of everything we achieved together. Here’s to ten. H

A lifetime of chaos in one little collage #10YearsOfOneDirection

Emotion filled day today. The love from around the world 10 years on is amazing. Thank you for your loyal support as always. Crazy what 5 normal guys can achieve. Proud ❤️ #10YearsfOneDirection

And we're back! 👨🏻‍💻🤓 1D.lnk.to/10YearsOf1DWeb… #10YearsOf1D

Absolutely Horrendous what happened in Manchester tonight. My thoughts are with the great people of Manchester and also Ari and her team xx

I'm heartbroken over what happened in Manchester tonight. Sending love to everyone involved. H

Sending all my love to every single family at the Manchester show last night. So upsetting

To see what has happened in Manchester makes me really sad. My thoughts are with those that are experiencing such tragedy at this time x