The four-day event - the world’s largest international television market hosted by a single distributor – is increasing its buyer attendees by 10% this year.
This year it will be hosting special events to celebrate the 50th anniversary of Doctor Who and to spotlight the BBC Natural History Unit's Africa series.
BBC Worldwide president and managing director, sales and distribution, Steve Macallister said: "In another record-breaking year, we welcome our largest number of buyers to Liverpool - up by 10% on last year - and we have two brilliant programme-themed evenings planned.
"Africa is certain to capture the imagination of our delegates as it has the British public over the past few weeks. What a perfect opportunity to also celebrate the world’s longest running sci-fi series with Doctor Who in its 50th year, at this biggest ever Showcase. We have a great slate of new titles across every genre and are delighted to be hosting some superb on screen talent over the four days of the event."
The event will feature more than 2,800 hours of television content available for attendees to view in 600 tailor-made digibooths.
It also includes red carpet events and premieres where producers introduce new series and forums, setting the stage for buyers to network with talent and producers.
Bob Prattey, chief executive of ACC Liverpool, home to BT Convention Centre and Echo Arena, said: "Last year BBC Worldwide brought its prestigious event to ACC Liverpool for the first time and it proved to be a great success.
"We have continued to work closely with the BBC Worldwide team throughout the year to build on 2012 and anticipate another terrific Showcase this year."