Thanks for your votes in the Lockdown Countdown.
Here's the list so far, we'll update this once a day throughout the countdown!

441 You Belong With Me Taylor Swift
442 My Life Would Suck Without You Kelly Clarkson
443 My My My Armand Van Helden Feat Tara McDonald
444 Cant Stop This Thing We Started Bryan Adams
445 Don't Stop Movin' S Club 7
446 Dr Feelgood Motley Crew
447 Ms Jackson Outkast
448 See You Again Miley Cyrus
449 Kung Fu Fighting Bus Stop Feat Carl Douglas
450 So What Pink
451 Dilemma Nelly Feat Kelly Rowland
452 Poker Face Lady Gaga
453 Stronger (What Doesn't Kill You) Kelly Clarkson
454 Beautiful Snoop Dogg Feat Pharrell & Uncle Charlie Wilson
455 Big Girls Don't Cry Fergie
456 Shake It Metro Station
457 Hey There Delilah Plain White T's
458 Bubbly Colbie Caillat
459 Californication Red Hot Chili Peppers
460 Love Song Sara Bareilles
461 Tears In Heaven Eric Clapton
462 My People The Presets
463 Apologize Timbaland Feat OneRepublic
464 Feel So Close Calvin Harris
465 The A Team Ed Sheeran
466 Rock This Party (Everybody Dance Now)
Bob Sinclar & Cutee B Feat Dollarman, Big Ali & Makedah
467 Never Let Me Go Florence & The Machine
468 Bye Bye Bye Nsync
469 Animal Neon Trees
470 Adore Amy Shark
471 Far Away Nickelback
472 California Gurls Katy Perry
473 Gold On The Ceiling The Black Keys
474 Don't Stop Me Now Queen
475 Wolves Selena Gomez & Marshmello
476 I Gotta Feeling The Black Eyed Peas
477 There's Nothing Holdin' Me Back Shawn Mendes
478 Crazy In Love Beyonce Feat Jay-Z
479 Sex On Fire Kings Of Leon
480 In My Head Jason Derulo
481 Dynamite Taio Cruz
482 Thunder Imagine Dragons
483 Last Friday Night (TGIF) Katy Perry
484 Knockin on Heaven's Door Guns N Roses
485 Post Malone Sam Feldt Feat RANI
486 It’s Oh So Quiet Bjork
487 Disturbia Rihanna
488 Pumped Up Kicks Foster The People
489 Haven't Met You Yet Michael Buble
490 Paparazzi Lady Gaga
491 Don't Cha The Pussycat Dolls Feat Busta Rhymes
492 Flashdance What A Feeling Irene Cara
493 Angel Shaggy Feat Rayvon
494 Breakeven The Script
495 Not Fair Lily Allen
496 7 Years Lukas Graham
497 Too Good Drake Feat Rihanna
498 What Do You Mean Justin Bieber
499 Mr Brightside The Killers
500 Lose My Breath Destinys Child
501 Hoops The Rubens
502 Paris The Chainsmokers
503 Change Your Life Little Mix
504 Chameleon Pnau
505 Paper Cuts Illy
506 Stay With Me Sam Smith
507 Don’t Come Around Here No More Tom Petty and the Heartbreakers
508 What Do I Know? Ed Sheeran
509 Bad Guy Billie Eilish
510 No Promises Cheat Codes Feat Demi Lovato
511 It Ain't Me Kygo & Selena Gomez
512 Let It Go James Bay
513 Despacito (Remix) Luis Fonsi & Daddy Yankee Feat Justin Bieber
514 I'm A Believer Smashmouth
515 Gimme! Gimme! Gimme Sgt Slick
516 Payphone Maroon 5
517 All Of Me John Legend
518 Problem Ariana Grande Feat Iggy Azalea
519 Call Me Blondie
520 Prayer In C (Remix) Lilly Wood & Robin Schulz
521 Happier Ed Sheeran
522 Live In Life The Rubens
523 Take Me Over Peking Duk Feat SAFIA
524 London Calling The Clash
525 Blame It On Me George Ezra
526 Brokenhearted Karmin
527 I Miss You Blink 182
528 Where Have You Been Rihanna
529 Just Give Me A Reason Pink Feat Nate Ruess
530 Waiting On The World To Change John Mayer
531 I Will Wait Mumford & Sons
532 One More Night Maroon 5
533 Burning Down The House Talking Heads
534 Sweet Nothing Calvin Harris Feat Florence Welch
535 Love Me Again John Newman
536 As I Lay Me Down Sophie B Hawkins
537 Thrift Shop Macklemore & Ryan Lewis Feat Wanz
538 Orange Crush REM
539 I Love It Icona Pop Feat Charli XCX
540 Pompeii Bastille
541 Shut Up The Black Eyed Peas
542 Are You Gonna Be My Girl Jet
543 Move Your Feet Junior Senior
544 Live It Up Mental As Anything
545 Milkshake Kelis
546 Here Without You 3 Doors Down
547 It's My Life No Doubt
548 Independent Women Destiny's Child
549 Alive Pearl Jam
550 Rock Your Body Justin Timberlake
551 Someday Nickelback
552 On A Night Like This Kylie Minogue
553 Don’t You Forget About Me Simple Minds
554 In The Shadows The Rasmus
555 Uptown Girl Billy Joel
556 Get The Party Started Pink
557 Better Be Home Soon Crowded House
558 Fighter Christina Aguilera
559 Blaze of Glory Bon Jovi
560 (I Just) Died In Your Arms Cutting Crew
561 Learn To Fly Foo Fighters
562 What's Love Got To Do With It Tina Turner
563 Whole Again Atomic Kitten
564 Things That Make You Go Hmmmm C+C Music Factory
565 Say My Name Destiny's Child
566 All The Small Things Blink-182
567 How Bizarre OMC
568 Walking On Sunshine Katrina & The Waves
569 Complicated Avril Lavigne
570 Easy Faith No More
571 Beautiful Day U2
572 Little L Jamiroquai
573 Times Like These Foo Fighters
574 Fix You Coldplay
575 Ride On Time Black Box
576 TRUE Spandau Ballet
577 Things Can Only Get Better D:Ream
578 The Reason Hoobastank
579 Angels Robbie Williams
580 Girls Just Want To Have Fun Cyndi Lauper
581 The Key The Secret Urban Cookie Collective
582 Without Me Eminem
583 (I've Had) The Time Of +A578My Life Bill Medley & Jennifer Warnes
584 Leave A Light On Belinda Carlisle
585 Crazy Gnarls Barkley
586 To The Moon & Back Savage Garden
587 This Kiss Faith Hill
588 By My Side Inxs
589 Never Be The Same Camilla Cabello
590 Sexual Healing Marvin Gaye
591 Wild Thing Tone-Loc
592 This Is Your Night Amber
593 Lonely Akon
594 And We Danced The Hooters
595 Baby One More Time Britney Spears
596 When Doves Cry Prince
597 Better The Devil You Know Kylie Minogue
598 Other Side Red Hot Chili Peppers
599 Can't Feel My Face The Weeknd
600 Dancing Queen Abba
601 Two Of Us Birds Of Tokyo
602 Waterfalls TLC
603 Miss Independent Kelly Clarkson
604 The Distance Cake
605 Crazy Seal
606 We Built This City Starship
607 Shimmer Fuel
608 You're Beautiful James Blunt
609 I Feel The Earth Move Martika
610 I'll Stand By You Pretenders
611 I'm Gonna Be (500 Miles) Proclaimers
612 Good Luck Basement Jaxx
613 Something For The Pain Bon Jovi
614 From Paris To Berlin Infernal
615 Unpretty TLC
616 Unbelievable EMF
617 Out Of Touch Hall & Oates
618 I Want It That Way Backstreet Boys
619 The Weekend Michael Gray
620 Bad Day Daniel Powter
621 It's My Life Bon Jovi
622 The Horses Daryl Braithwaite
623 Hello Adele
624 Toxic Brittney Spears
625 (Baby I've Got You) On My Mind Powderfinger
626 There You Go Pink
627 Groove Is In The Heart Deee-Lite
628 Rock DJ Robbie Williams
629 I Love It Sneaky Sound System
630 Tell Me Baby Red Hot Chili Peppers
631 The Look Roxette
632 Maneater Nelly Furtado
633 Baby, I Love Your Way Big Mountain
634 Stuck In A Moment U2
635 Tubthumping Chumbawamba
636 I Got You Babe UB40 & Chrissie Hynde
637 This Ain't A Scene, It's An Arms Race Fall Out Boy
638 The Best Tina Turner
639 Don't Dream It's Over Crowded House
640 House Of Love East 17
641 Listen To Your Heart Roxette
642 Head Over Feet Alanis Morissette
643 Boom! Shake The Room DJ Jazzy Jeff & The Fresh Prince
644 She Will Be Loved Maroon 5
645 Chase The Sun Planet Funk
646 She's So High Tal Bachman
647 Karma Alicia Keys
648 One Week Barenaked Ladies
649 I Think We're Alone Now Tiffany
650 Superman (It's Not Easy) Five For Fighting
651 Never Gonna Give You Up Rick Astley
652 7 Rings Ariana Grande
653 Pony Ginuwine
654 We Like To Party Vengaboys
655 Get Outta My Dreams, Get Into My Car Billy Ocean
656 Thanks For The Mmrs Fallout boy
657 Shout Tear for Fears
658 Hollaback Girl Gwen Stefani
659 Walking In Memphis Marc Cohn
660 Wrap Me Up Alex Party
661 Life In A Northern Town The Dream Academy
662 The Rhythm Of The Night Corona
663 Day Drunk Morgan Evans
664 Good Vibrations Marky Mark & The Funky Bunch
665 High Hopes Panic! At The Disco
666 Hotline Bling Drake
667 Back To You Selena Gomez
668 Here I Go Again Whitesnake
669 IDGAF Dua Lipa
670 Bad Liar Imagine Dragons
671 This Is Me Kesha
672 Night Fever Bee Gees
673 We're Going Home Vance Joy
674 I'm So Tired... Lauv & Troye Sivan
675 Rare Selena Gomez
676 Ass Back Home Gym Class Heroes Feat Neon Hitch
677 Murder On The Dancefloor Sophie Ellis-Bexter
678 Centerfold The J Geils Band
679 Who Said (Stuck In The UK) Planet Funk
680 Tequila Dan + Shay
681 Whoomp! (There It Is) Tag Team
682 Invisible Touch Genesis
683 In My Blood Shawn Mendes
684 Ring Ring Ring (Ha Ha Hey) De La Soul
685 Virtual Insanity Jamiroquai
686 2002 Anne-Marie
687 Here Comes The Hotstepper Ini Kamoze
688 Linger Cranberries
689 What Lovers Do Maroon 5
690 Where The Streets Have No Name U2
691 Let's Talk About Sex Salt 'N' Pepa
692 Born To Be Yours Kygo & Imagine Dragons
693 In The Air Tonight Phil Collins
694 I Like To Move It Reel 2 Real Feat The Mad Stuntman
695 One Kiss Calvin Harris & Dua Lipa
696 We're All In This Together Ben Lee
697 Free Your Mind En Vogue
698 Nevermind Dennis Lloyd
699 Blue (Da Ba De) Eiffel 65
700 Happier Marshmello & Bastille
701 Search For The People M People
702 Friday i'm in love The Cure
703 Did It Again Kylie Minogue
704 Only Human Jonas Brothers
705 You Keep Me Hangin On Kim Wilde
706 Ice Ice Baby Vanilla Ice
707 I'm Not the Only One Sam Smith
708 Informer Snow
709 One Thing Right Marshmello & Kane Brown
710 As The Days Go By Daryl Braithwaite
711 Teenage Dirtbag Wheatus
712 Baby Got Back Sir Mix-A-Lot
713 New Sensation INXS
714 Stimulation Wa Wa Nee
715 Next Year Foo Fighters
716 Roam The B-52's
717 Warning Green Day
718 This City Sam Fischer
719 Out Of Mind, Out Of Sight Models
720 Respectable Mel & Kim
721 A Little Bit Pandora
722 Harder To Breathe Maroon 5
723 Some Like It Hot Power Station
724 Take Me Back Noiseworks
725 I'm Too Sexy Right Said Fred
726 Larger Than Life Backstreet Boys
727 Four To The Floor Starsailor
728 It's Only The Beginning Deborah Conway
729 Caution The Killers
730 Dreamlover Mariah Carey
731 Stayin' Alive N-Trance
732 Dancing With A Stranger Sam Smith & Normani
733 Baby Baby Corona
734 Halo Beyonce
735 Sucker Jonas Brothers
736 Someday Someday Thirsty Merc
737 Shy Guy Diana King
738 Humpin' Around Bobby Brown
739 Rome Wasn't Built In A Day Morcheeba
740 7 Days Craig David
741 Electric Blue Icehouse
742 Give Me One Reason Tracy Chapman
743 I Just Wanna Live Good Charlotte
744 Pray Tina Cousins
745 December, 1963 (Oh, What A Night) Frankie Valli & The Four Seasons
746 Memories Maroon 5
747 Piece Of Your Heart Meduza Feat Goodboys
748 Remember The Time Michael Jackson
749 My Name Is Eminem
750 Push It Salt 'N' Pepa
751 Scar Missy Higgins
752 Wanna Be Up Chantoozies
753 Now We're Getting Somewhere Crowded House
754 Get Busy Sean Paul
755 Come Said The Boy Mondo Rock
756 Body Loud Luxury Feat Brando
757 Bad Case of Lovin You (Doctor, Doctor) Robert Palmer
758 Please Don't Go KWS
759 Smile Uncle Kracker
760 Another Chance Roger Sanchez
761 Born To Be Alive Patrick Hernandes
762 I Say A Little Prayer Diana King
763 Geronimo Sheppard
764 Ride It Regard
765 To Die For Sam Smith
766 No Lies Noiseworks
767 Thriller Michael Jackson
768 Ten Days Missy Higgins
769 Sk8er Boi Avril Lavigne
770 China Girl David Bowie
771 C'mon N' Ride It (The Train) Quad City DJ's
772 Alone Heart
773 Know Your Worth Khalid & Disclosure
774 Grace Kelly Mika
775 Say So Doja Cat
776 How To Save A Life The Fray
777 Bad Child Tones & I
778 Professional Widow (Remix) Tori Amos
779 Save Tonight Eagle-Eye Cherry
780 Before You Go Lewis Capaldi
781 Funhouse Pink
782 Castles Freya Ridings
783 Let's Stick Together Bryan Ferry
784 Dirrty Christina Aguilera Feat Redman
785 The Other Side SZA & Justin Timberlake
786 Kids Robbie Williams & Kylie Minogue
787 Heartbreak Warfare John Mayer
788 Pure Shores All Saints
789 Free Fallin Tom Petty and the Heartbreakers
790 Choir Guy Sebastian
791 I'm Every Woman Whitney Houston
792 Black Fingernails, Red Wine Eskimo Joe
793 Lose Control Meduza, Becky Hill & Goodboys
794 Lean On Me Club Nouveau
795 Old Me 5 Seconds Of Summer
796 Promiscuous Nelly Furtado Feat Timbaland
797 Circles Post Malone
798 Closing Time Semisonic
799 World Where You Live Crowded House
800 Hands Clean Alanis Morissette