Popular Baptist preacher Tony Campolo will be among the special guests at this year's Christian Resources Exhibition International.
It will be the fourth visit to the CRE for Campolo, founder of the Red Letter movement and advocate of Christian social justice.
The CRE International returns to Sandown Park in Esher, Surrey, from 14 to 17 May.
Campolo, professor emeritus of sociology at Eastern University in Pennsylvania, was spiritual adviser to former President Bill Clinton following the Lewinsky scandal. He will speak at CRE and in Westminster on behalf of Bible Society.
"We are delighted to welcome Tony back to CRE," said Paul Trott, head of marketing for CRE's parent company, Bible Society.
"His perceptive contributions on a range of topical issues are always appreciated by thousands of CRE visitors."
A two-day regional show went ahead last week at the University of West England despite the bad weather keeping many people at home.
"In spite of difficult weather conditions we are delighted to report that visitors totalled 2227," said CRE sales and event director Bill Allen.
"The first day was particularly difficult, weather-wise and more than 700 visitors who had pre-booked failed to appear because of hazardous conditions on the road.
"In spite of this exhibitors reported real interest and we intend to return to Bristol in three years' time."
For the first time in its history, the CRE will be held four times in 2013 with additional shows in Birmingham on 3 and 4 October and Edinburgh on 28 and 29 November.