The programme is correct. A grid of lines is visible over the picture. Like a test pattern overlay. Horizontal and vertical lines. The reseller's stream has a grid filter accidentally enabled. You're watching content through a wireframe.
A British IPTV reseller whose video has a grid overlay has a processing problem. A test pattern grid is enabled. The reseller never checked. Every channel has a wireframe overlay. Your content is obscured by lines.
The British IPTV services with clean video have no overlays. The reseller who left a grid enabled has added visual noise to everything.
The IPTV reseller panel includes video overlay settings. The reseller can enable test patterns. Someone turned on a grid by mistake. The reseller's error draws lines across everything you watch.
The IPTV reseller UK operators who watch their own content would notice the grid. They'd disable the overlay. The resellers who never watch don't know that you're watching through a wireframe.
Here's a scenario that makes the picture ugly. You're watching a movie. A grid of lines covers the entire screen. Horizontal and vertical lines. They're subtle but visible. They cut across faces, landscapes, action. The beautiful picture is marred by a technical overlay.
Every programme has the same grid. The reseller's mistake has added a test pattern to your entertainment.
I've tested video overlays across dozens of resellers. Most have clean video without overlays. Some have grids or other test patterns accidentally enabled. The reseller's processing settings determine whether you see clean video or technical overlays.
An overlay free British IPTV reseller will have video without grids, lines, or test patterns. You can test this by watching any content. If you see no grid or overlay lines, video processing is clean. If you see a grid, the reseller has an overlay enabled.
The same principle applies to timecode overlays, date stamps, or watermarks. The careful reseller delivers clean, unmarked video.
A clean British IPTV service will have video without any technical overlays. Test by watching a variety of content. If the picture is free of grids and lines, processing is good.