![BBC Radio 1 on Twitter: "It's 70 years of the Official Singles Chart today 🎂 @officialcharts @jackxsaunders is celebrating alongside some very special guests from 4pm on @BBCSounds ✨ https://t.co/ZPp4VfR7Qp https://t.co/CsOmtrGpk3" / BBC Radio 1 on Twitter: "It's 70 years of the Official Singles Chart today 🎂 @officialcharts @jackxsaunders is celebrating alongside some very special guests from 4pm on @BBCSounds ✨ https://t.co/ZPp4VfR7Qp https://t.co/CsOmtrGpk3" /](https://pbs.twimg.com/media/Fh23NbNWAAAu50b.jpg:large)
BBC Radio 1 on Twitter: "It's 70 years of the Official Singles Chart today 🎂 @officialcharts @jackxsaunders is celebrating alongside some very special guests from 4pm on @BBCSounds ✨ https://t.co/ZPp4VfR7Qp https://t.co/CsOmtrGpk3" /
![Rapper/singer Iyaz makes an appearance at BBC Radio One to celebrate his first U.K. No. 1 on the new U.K. singles chart with his former Billboard Hot 100 No. 2 "Replay." London, Rapper/singer Iyaz makes an appearance at BBC Radio One to celebrate his first U.K. No. 1 on the new U.K. singles chart with his former Billboard Hot 100 No. 2 "Replay." London,](https://c8.alamy.com/comp/2MRA4DN/rappersinger-iyaz-makes-an-appearance-at-bbc-radio-one-to-celebrate-his-first-uk-no-1-on-the-new-uk-singles-chart-with-his-former-billboard-hot-100-no-2-replay-london-uk-51910-2MRA4DN.jpg)
Rapper/singer Iyaz makes an appearance at BBC Radio One to celebrate his first U.K. No. 1 on the new U.K. singles chart with his former Billboard Hot 100 No. 2 "Replay." London,
![BBC celebrates 70 years of singles chart by playing most streamed track released each year | Complete Music Update BBC celebrates 70 years of singles chart by playing most streamed track released each year | Complete Music Update](https://completemusicupdate.com/wp-content/uploads/2017/01/bbcradio21250.jpg)
BBC celebrates 70 years of singles chart by playing most streamed track released each year | Complete Music Update
![Stream DJ Alex Parker | Listen to BBC Radio 1 UK Top 40 Dance Singles Chart - Remixes playlist online for free on SoundCloud Stream DJ Alex Parker | Listen to BBC Radio 1 UK Top 40 Dance Singles Chart - Remixes playlist online for free on SoundCloud](https://i1.sndcdn.com/artworks-000811573891-vler1v-t500x500.jpg)