'Gangnam Style' beat 'Call Me Maybe' as the most trending pop song and 'Skyfall' topped 'Prometheus' as the most enquired about film.
Rio - home to the 2016 Olympics and a host city for the 2014 football World Cup - beat Greece as the most searched-for destination.
Google's UK results are split into trending searches and most searched.
Justin Bieber's split from Selena Gomez was the most enquired-about relationship bust-up while Victoria Pendleton beat Georgia Salpa as the most searched-for participant in a reality television show.
Sport dominated the trending searches, with Euro 2012 and Olympic tickets showing the biggest rises in interest ahead of Houston and the Duchess of Cambridge.
But the duo topped the trending celebrities section followed by 'X Factor' judges Gary Barlow and Tulisa.
Andy Murray's US Open victory and Olympic gold medal helped him to become the most searched-for British Olympian.
Usain Bolt was the most searched-for non-UK Olympian.
TV soaps regularly top the TV ratings but the highest trending show of 2012 was the BBC kids' show 'Mike The Knight' that beat US terror drama 'Homeland' and 'Towie.' Most searched topics on Google:1. Euro 20122. Olympic tickets3. Whitney Houston4. Kate Middleton5. April Jones6. Netflix7. Natwest online8. iPad 39. Gary Barlow10. Gangnam Style Most searched celebrities on Google:1. Whitney Houston2. Kate Middleton3. Gary Barlow4. Tulisa5. Jessica Ennis6. Fabrice Muamba7. Michael Clarke Duncan8. Morgan Freeman9. Prince Harry10. Usain Bolt Most searched Television show on Google:1. Mike The Knight2. Homeland3. Towie4. The Jonathan Ross Show5. Celebrity Big Brother6. Sherlock7. The Great British Bake Off8. Game Of Thrones9. The Big Bang Theory10. How I Met Your Mother Most searched films on Google:1. Skyfall2. Prometheus3. The Hunger Games4. Magic Mike5. Take 26. The Avengers7. The Woman In Black8. The Dictator9. Sinister10. The Devil Inside Most searched reality TV stars on Google:1. Victoria Pendleton2. Georgia Salpa3. Danica Thrall4. Lucy Spraggan5. Natasha Giggs6. Jasmine Lennard7. Nicola McLean8. Andy Scott-Lee9. Jahmene Douglas10. Jerry Hall Most searched music artists on Google:1. Lucy Spraggan2. The Military Wives3. Will.i.am4. Emeli Sande5. Psy6. One Direction7. The Spice Girls8. Muse9. Girls Aloud10. Dizzee Rascal Most searched songs on Google:1. Gangnam Style2. Call Me Maybe3. Blow Me One Last Kiss4. Beneath Your Beautiful5. The Official Olympic Song (Survival by Muse)6. Skyfall7. Somebody That I Used To Know8. We Are Young9. Too Close10. 212 Most searched travel hotspots on Google:1. Rio de Janeiro2. Greece3. Brazil4. Dubai5. Paris6. London7. Bruges8. Cornwall9. Edinburgh10. Barcelona