You look in the Sports category. Sky Sports appears. You look in the Entertainment category. Sky Sports appears again. The same channel is listed in multiple categories. Your reseller's category assignment is overlapping. You see duplicates while browsing.
A British IPTV reseller whose channels appear in multiple categories has lazy category assignment. They added the same channel to Sports and Entertainment instead of choosing one. Your guide shows duplicates. You scroll past the same channel multiple times in different sections.
The British IPTV services with clean categories assign each channel to one primary category. Sports channels stay in Sports. Entertainment channels stay in Entertainment. The reseller who dumps channels into every possible category is making browsing inefficient.
The IPTV reseller panel includes category assignment. The reseller can assign each channel to one category or many. Many categories create duplicates in your guide. The reseller's choice affects how efficiently you can browse.
The IPTV reseller UK operators who use their own guide would notice the duplicates. They'd clean up category assignments. The resellers who never browse don't know that every channel appears in three different sections.
Here's a specific scenario that makes browsing slow. You're looking for a movie channel. You look in Movies. You see it. You also see it in Entertainment. You also see it in General. Every channel appears everywhere. You scroll past the same channel three or four times while browsing a single category.
The guide is cluttered with duplicates. What should be fifty channels per category becomes two hundred entries, most of them repeats. You waste time scrolling past channels you've already seen. The reseller's lazy categorisation has made the guide inefficient.
I've tested category assignment across dozens of resellers. Clean categories are rare. Most resellers assign every channel to every category or use a default category for everything. Your browsing experience suffers. The reseller never bothered to organise.
An organised British IPTV reseller will have each channel in exactly one category or clearly defined categories with minimal overlap. You can test this by browsing different categories. If the same channels appear everywhere, categorisation is broken.
The same principle applies to missing categories. Some resellers dump all channels into "All Channels" and have no other categories. You scroll through thousands of channels to find what you want. The careful reseller creates useful categories that help you find content.
A categorised British IPTV service will have a guide that helps you find content, not hide it. Sports in Sports. Movies in Movies. No duplicates. No missing categories. Test by browsing before you commit.