Kate Ho

The London Book Fair took place this week - the UK's largest publishing event.

Over the past decade the presence of digital publishing has been increasingly felt there - but this year another milestone was reached. Video gamers were given their own pavilion, another sign of barriers breaking down in the digital world.

The search for the next publishing sensation, and digital business model, dominated the agenda at the opening day of the annual London Book Fair on Tuesday.

The head of the industry trade body warned that simply "turning a book into a PDF" was not innovative enough to capture readers' imaginations and sales. "In any sector, in any industry, stagnation is death. If you stand still, you are probably in danger because someone will come along and take your consumers from you," said Richard Mollet, chief executive of the Publishers Association.