UK companies are overwhelmingly still using the London Stock Exchange's Regulatory News Service (RNS) for its company announcements, despite the fact that RNS is losing market share every week.

RNS lost the monopoly on providing price-sensitive company announcements to the UK in April, after the Financial Services Authority assumed the Competent Listing Authority mantle following demutualisation of the LSE. Over 86% of the 16,816 announcements made since the April 15, when primary information providers (PIPs) entered the market, were carried via RNS, according to a new survey by data technology company Knowledge Technology Solutions.