Other markets are re-opening at varying paces, with its largest event, Shoptalk, which was previously postponed from March to September, now cancelled before a return to its original timeframe of March 2021.
The company, whose shares have slumped from 6,000p in January to 122.1p this morning, added that it has received a first interim payment of £7.35 million in a relation to insurance claims for event cancellation.
Troubled recruiter Staffline fell back 23% to 37p after it said it knew of no reason for the share price rally seen yesterday. It also expects to report a small underlying loss for 2019.