Women over 35 are becoming e-book digital pirates, says legal firm Wiggin.

The firm's annual Digital Entertainment Survey revealed one in eight women over 35 that owns an e-book reader or tablet PC has admitted to illegally downloading an e-book for the device. However, just one in 20 women of the same age say they've illegally downloaded a music file from the web.

Nearly a third (29 percent) of both male and female e-reader owners and 36 percent of those with tablet PCs claim they have downloaded an illegal e-book from the web, while more than one in five (21 percent) Brits admit to some form of illegal file-sharing. Nearly two thirds (62 percent) believe more should be done to tackle internet piracy.

According to the Publishers Association, overall sales of both books and e-books fell by three percent last year 30 £31bn. E-books were responsible for £120m of the total industry, with £16m of that coming from consumer e-book sales.