Tuesday, May 07, 2013
This example is from the Daily Telegraph (15 April 2013). Fewer is wrong here; less is normally used for statistical measures (e.g. less than 30% per cent, not fewer than ...). Fewer would have been correct if a raw figure had been used, e.g. Fewer than 200 readers scored full marks.
The error was particularly ironic because it appeared in an article about good grammar.