Syzygy - 8:58 am on Feb 2, 2010 (gmt 0)
The claim of '1 in 10' (or 4 million people) sounds rather dubious. Closer inspection of the OFT website shows that:
...5,718 people were surveyed online by YouGov in January 2010.
Scaling up results from such small samples and presenting them as a reflection of society as a whole is a very bad practice! Tut, tut.