"Shine a Light" is the second single from English band McFly's fifth studio album, Above the Noise. The single features vocals from singer Taio Cruz. The single was released on 7 November 2010 via digital download, with a physical release following the next day. A free download was available for members of the band's new website, SuperCity. The song received mostly positive reviews from pop music critics. On 3 November 2010, the song was added to BBC Radio 1's A-List. The song peaked the number 9 in UK Airplay Chart. McFly secured their fifteenth Top 5 hit with "Shine a Light" on the UK Singles Chart.
The single was first confirmed by band frontman Tom Fletcher, before being made available to pre-order on the HMV website. Fletcher described the writing process as "working backwards" in comparison to how the band usually writes their songs. They started out with the beat and then built the song around it.
Robert Copsey from Digital Spy awarded it 4 stars and said: "'Shine a Light' might be a sentimental number about missing an ex, but with Cruz's squelchy synths, McFly's trademark pop/rock choonage and some deceptively catchy "Eh Eh"s, the urge to bound around the nearest open space for three minutes and 45 seconds is near-irresistible." Iain Moffatt from BBC Music said that: "even the perfectly serviceable of-the-moment pop of Shine a Light are little preparation for the delights in store here". The Entertainment Focus review said that: "Across the record the band takes anthemic pop on the corking Shine a Light". Johnny Dee from Virgin Media said: "Better is the Auto-Tune soul of "Shine a Light" which sees the band teaming up with Taio Cruz to good effect." Jack Foley from Indie London said that: "Shine a Light showing what can be achieved when they fuse pop rock with dance-pop and combine vocals with Taio Cruz (arguably the best offering either of these two acts have had in the charts for some time!)".
The song premiered on 21 September 2010, following a video treasure hunt competition involving the band. The treasure hunt allowed fans to appear in the music video for the track by hunting for clues to get to the place of filming. It premiered on the group's website on 9 October, appearing on their YouTube page just hours later. The video was directed by Phil Griffin. It features McFly and Cruz performing together in a cage, whilst hoards of fans watch them from outside.
On 14 November, the single debuted on the UK Singles Chart at number 4, with sales of more than 51,000 copies, the song spent seven weeks in the Top 20, In its 7th week, "Shine a Light" became the top selling singles of McFly after "All About You" and spent eighteen weeks in UK top 100. The song peaked the number 9 in UK Airplay Chart. As of 2012, it has sold 341,000 copies in the UK.
In Scotland the song spent three weeks on Top 10 and eight weeks in the Top 20. In Portugal the song spent seven weeks on Top 20. Nine weeks after the original release, "Shine a Light" featured 16 in 4Music's top 20 for the week.