Here's a blind spot that costs British IPTV resellers customer goodwill: your IPTV Reseller Panel logs pre-roll ads as "successful delivery" — but not how many British IPTV viewers immediately closed the stream when an ad played before their show. A reseller in Stockton-on-Tees had British IPTV customers complaining about "ads before everything" but his panel showed normal engagement. The disconnect: his IPTV Reseller Panel logged ad starts but not ad abandons. British IPTV viewers who saw a 30-second pre-roll ad and closed the stream counted as "ad delivered successfully" in the panel's metrics. British IPTV audiences were abandoning streams because of pre-roll ads, and the panel was hiding this from resellers. What actually works is ad abandonment tracking. A reseller in Stoke-on-Trent switched to a panel that logs when a viewer closes a stream during an ad. He discovered 25% of British IPTV sessions were abandoning during pre-roll ads. The pattern that keeps showing up is that "ad delivered" metrics hide ad rejection. Ask your provider: "Do you log ad abandonment — when viewers close streams during ads? Can you tell me what percentage of your viewers are leaving because of ads?" If they only track ad starts, your British IPTV pre-roll ads could be driving away a quarter of your audience without you knowing.