The Booklet's selections are by such rock writing luminaries as Jon Savage, Nick Tosches, and Nick Hornby (High Fidelity, About a Boy), and has a write-up on "Bohemian Rhapsody" Daryl Easlea (DE).

Writes Nick Hornby in the introduction:
"You can argue about this list, but then you'd be missing the point -- there are hundreds, thousands of singles that could just as easily been included here..."

Here's the text in full:
#47 Bohemian Rhapsody/I'm In Love With My Car EMI 1975
Recorded on the same piano as the Fabs' Hey Jude, Bo Rap is one of the most complex and beguiling singles ever made. Overrated by those who love it and underrated by those who don't, the public voted it *the* most popular UK Number 1. No one can deny the copper-bottomed durability of this, the very embodiment of pop nonsense. It's the ultimate 3-in-1 offer -- ballad, heavy rock and high camp on a scale unseen since Kenneth Williams screamed "Infamy, infamy! They've got it all in for me!" 11 years previously.

Other Queen-related/curious appearances (w/ A-sides):

97 Beach Boys God Only Knows
95 Sparks This Town Ain't Big Enough For The Both Of Us
39 Rainbow Since You've Been Gone
34 Chic Good Times
30 David Bowie Changes

and Number 1?
The Kingsmen
Louie Louie