Nexus Media Communications is to cut the number of business sectors it operates in, with the possible loss of 25 journalists.
The company said its intention was to focus on five sectors: automotive, retail, travel, wines and spirits and international trade shows, instead of the current 18, in what it called "a complete strategic review of its assets".
It is expected that most of the products in other markets will be sold or licensed to third parties, with some facing closure.
The company said it was entering into a 30-day period of consultation with affected staff. Nexus chief executive Neil Thackray said: "We currently employ 48 journalists, of whom not more than 25 have been identified as potentially affected as a result of this strategic review.
"It is important to emphasise that no final decisions have been taken and we are doing all we can to reduce the number of posts potentially affected to as close to zero as possible."
He added: "We have concluded that our future growth strategy is best served by focusing our endeavours on fewer markets than the 18 we currently operate in. "We will be making significant investment in our chosen sectors."
The Kent-based company produces magazines, exhibitions, conferences, awards evenings and online services, including publications such as Independent Retail News and Harpers Wine & Spirits Directory.