Professional ratings
Aggregate scores
Source	Rating
Metacritic	67/100
Review scores
Source	Rating
AllMusic
The A.V. Club	B+
Drowned in Sound	8/10
Entertainment Weekly	B
The Guardian
Pitchfork Media	6.4/10
PopMatters
Rolling Stone
Slant Magazine
Stylus Magazine	D+

Public Warning is the debut studio album by UK hip hop artist Lady Sovereign, released on 31 October 2006. The album, a mix of grime and hip hop, was originally due for release in November 2005 but was pushed back after Lady Sovereign was signed by Island Def Jam.

In a July 2006 press release, the album's track listing was confirmed. Public Warning features Lady Sovereign's three past singles, tracks from her two EPs: Vertically Challenged and Blah Blah, as well as newly recorded tracks for the release, including "Love Me or Hate Me" and "Those Were the Days". The album was released in the U.K. on 5 February 2007, with a live cover of the Sex Pistols' "Pretty Vacant" as a bonus track.

Public Warning received generally positive reviews from critics, who praised the production and lyrical content for carrying both humor and substance. The album sold over 250,000 copies in the US and sold 300,000 copies worldwide.

Public Warning received generally positive reviews from music critics. At Metacritic, which assigns a normalised rating out of 100 to reviews from mainstream critics, the album has received an average score of 67, based on 34 reviews.

David Jeffries of AllMusic praised the album for Medasyn's production and Sovereign's lyrical content for being relatable, calling it "an exciting introduction to an extraordinary artist captured at just the right time." Michaelangelo Matos of The A.V. Club compared the album to The Sex Pistols, praising tracks like "Tango" and "Hoodie" for their angst-filled energy, saying "Even if Sov doesn't cross over the way she or Def Jam might want her to, she still sounds like an original—even for people who know half the songs already." Mike Diver of Drowned in Sound praised the album for having solid production and lyrical content that's both gritty and humorous, saying "When her tongue’s in cheek and her rhymes amuse, Lady Sovereign is hugely entertaining."

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