23 January

Charts
as announced on this day, with no.1 single (new in bold). Click year for full chart.
 * 1964: The Dave Clarke Five - Glad All Over (2/2)
 * 1972: The New Seekers - I'd Like To Teach The World To Sing (In Perfect Harmony) (4/4)
 * 1979: Ian Dury & The Blockheads - Hit Me With Your Rhythm Stick (1/1)
 * 1994: D:Ream - Things Can Only Get Better (2/4)
 * 2000: Britney Spears - Born To Make You Happy (1/1)
 * 2005: Ciara - Goodies (1/1)
 * 2011: Bruno Mars - Grenade (2/2)

Top of the Pops
host DJ and number one single. Click year for show details.
 * 1969: Pete Murray. Marmalade – Ob-La-Di-Ob-La-Da.
 * 1975: DLT. The Tymes - Ms. Grace.
 * 1986: Paul Jordan & Mike Smith. A-ha - The Sun Always Shines On TV.
 * 1992: Steve Anderson & Mark Franklin. Wet Wet Wet - Goodnight Girl.
 * 1998: Jamie Theakston. Oasis – All Around The World.
 * 2004: Tim Kash. Michelle McManus – All This Time