[6] Alexis Petridis from The Guardian praised the song, explaining, "Opener Under the Sun offers a weird and hugely enjoyable cocktail of tinny synthesiser, vast Chemical Brothers-style breakbeat and football-terrace backing vocals".

[8] Al Fox wrote for BBC Music that "the casual, high-spirited Under the Sun boasts a playful, summery, arguably alternative trait.

"[9] Laura Hills wrote a positive review for MSN Music, calling it "a perfectly acceptable track full of bounce, upbeat vocals and what some may say are obvious references to ex-husband Ashley Cole.

"[3] Laurence Green from musicOMH analysed that "Under the Sun serves as a thrillingly carefree album opener, all jaunty piano riffs and frat party chants.

In interviews, she might pointedly distance herself from any deeper meaning to the words, but truth be told, it's the way lines like these resonate so closely to Cole's own life that bolsters the album's cohesiveness and marks it out as a body of work that sounds fundamentally like ‘her’.

"[10] Lewis Corner of Digital Spy agreed, writing, "Cheryl may refuse to admit that her tracks are autobiographical, but when the credits list her as the primary songwriter, it's hard to ignore the song's potential to be a two-fingered salute to those who have attempted to sway her – and more power to her for it.

"[11] Kim Taylor Bennet from Time Out London called it a "Lily Allen-lite, cheapened instantly to a Magaluf anthem by an inexplicable football chant refrain.

[18] The video starts with Cheryl in a crowded café of suited men strolling to a juke box before leaving – attracting the attention of every bloke present.

Later, she walks down a decidedly modern street, complete with phone box, bus stop and cash point, before reclining on the bonnet of a classic car while a gang of gents in 50s suits dance around her.

After more strutting down the street in her leopard print heels, Cheryl breaks out a routine in front of a flashing background with the help of two shirtless men.

As the sun sets, Cheryl walks down a dark street – with yet more dancing – before going back into a café and chatting up a group of soldiers, making sure she nabs a slurp of milkshake on the way.