[1] The single's B-side, "There's a Place for Us", was recorded for the soundtrack of the film The Chronicles of Narnia: The Voyage of the Dawn Treader.

Jon O'Brien writing for AllMusic compared "Someone Wake Me Up" to having a combination of the refrain of "Love Story" by Taylor Swift and the backing track of "Teenage Dream" by Katy Perry.

[3] Darren Scott of Gay Times described it as a pop ballad unconventional to McElderry's norm, and noted similarities to Wham!

[6] McElderry performed "Someone Wake Me Up" for the first time at the annual Christmas Lights turn-on in Sheffield.

The video for the song intersperses clips from the film The Chronicles of Narnia: The Voyage of the Dawn Treader, with recordings of McElderry performing inside The Dawn Treader, during which the boat is being flooded.