Main article: BCA v. Singh
In 2008, Singh was unsuccessfully sued for libel by the British Chiropractic Association for criticising their activities in a column in The Guardian. A "furious backlash" to the lawsuit resulted in the filing of formal complaints of false advertising against more than 500 individual chiropractors within one 24 hour period, with one national chiropractic organisation ordering its members to take down their websites, and Nature Medicine noting that the case had gathered wide support for Singh, as well as prompting calls for the reform of English libel laws. On 1 April 2010, Simon Singh won his court appeal for the right to rely on the defence of fair comment. On 15 April 2010, the BCA officially withdrew its lawsuit, ending the case.
In 19 April 2008, The Guardian published Singh's column "Beware the Spinal Trap", an article that was critical of the practice of chiropractic and which resulted in Singh being sued for libel by the British Chiropractic Association (BCA). When the case was first brought against him, The Guardian supported him and funded his legal advice, as well as offering to pay the BCA's legal costs in an out-of-court settlement if Singh chose to settle.
The article developed the theme of the book that Singh and Edzard Ernst had just published, Trick or Treatment? Alternative Medicine on Trial, and made various statements about the lack of usefulness of chiropractic "for such problems as ear infections and infant colic":
You might think that modern chiropractors restrict themselves to treating back problems, but in fact they still possess some quite wacky ideas. The fundamentalists argue that they can cure anything. And even the more moderate chiropractors have ideas above their station. The British Chiropractic Association claims that their members can help treat children with colic, sleeping and feeding problems, frequent ear infections, asthma and prolonged crying, even though there is not a jot of evidence. This organisation is the respectable face of the chiropractic profession and yet it happily promotes bogus treatments.
The case was eventually abandoned by BCA, though leaving Singh out of pocket to the tune of some tens of thousands of pounds, but while it lasted it acted as a catalyst and focus for libel reform campaigners resulting in all major parties in the 2010 UK General Election making manifesto commitments to libel reform.