Figures released by Publishers Association in the UK show a dramatic increase from £4m to £16m in the sale of e-books and audio book downloads.
These figures show that while the online market is still a small proportion of book sales (a total of £3.1bn) digital devices are becoming increasingly popular with readers.
However, electronic book sales in the US in February did beat paperback and hardback sales.
Richard Mollet, chief executive of the Publishers Association, noted: “Digital publishing is growing at an impressive rate”, while print books are still “hugely popular”.
He suggested both print and digital books will sell happily alongside each other in the future.
“Now that technology is putting e-reading devices into consumers’ hands, we are starting to see the rapid growth of digital sales in this area too, as consumer publishers develop digital formats to reach wider audiences.”
Publishers Association stated that while this creation is taking off currently in the UK, the maximisation of profits could be in danger if laws regarding copyright are lessened in a government review.
“The innovation in the digital marketplace and the strength of British publishers’ export performance is only possible because of the robust and flexible copyright framework which underpins the UK creative industries,” Mr Mollet added.