Barb, the Broadcaster’s Audience Research Board, which churns out viewership data for broadcast and streaming channels to sell ads in the UK market, has upgraded its audience measurement activities with the deployment of services from three organizations. One is a household name, the Gracenote division of Nielsen, while the other two – MetaBroadcast and Clearcast – will be less familiar to readers. One unusual facet of these three contracts is that they are not due to commence until January 2025, when they will run for three years. But what happens if Nielsen is broken up and sold some time in 2024, or if MetaBroadcast and Clearcast go out of business before then? That is a risk Barb will have to…