Modern movies on British IPTV have horizontal lines during motion — like old interlaced video. Your IPTV reseller's British IPTV panel is mis-flagging progressive content as interlaced, and their IPTV panel doesn't detect scan type correctly. The pattern that keeps showing up across British IPTV interlacing artifacts complaints is this: an IPTV reseller using a cheap IPTV reseller panel has scan type detection errors. A British IPTV reseller with a professional IPTV panel correctly flags progressive content. A real-world example: a user's British IPTV showed combing artifacts on new movies. His IPTV reseller said "it's motion blur." The user proved interlacing flags were wrong. That said, ask your British IPTV seller: "Does your IPTV panel correctly detect progressive vs interlaced?" A scan-type accurate IPTV reseller will know. Quick practical breakdown: a correct IPTV panel preserves or detects progressive scan flags. Test with 24p movie content during trial. In most cases, the British IPTV reseller whose movies are artifact-free has correct scan detection; the one with combing doesn't. Honestly, seeing interlacing lines on brand new British IPTV movies was absurd. The IPTV reseller's IPTV panel was stuck thinking everything was 1980s TV.