There is a few options, all which need external research
1. for UK EPG only and manually assign one channel at a time, then echanneliser windows app can do that (google/videos)
2. a new small fee service call xtream-editor allows m3u/merging more than one m3u/url, assign epg/rename/create sections, then this works on enigma2 and Kodi pvr on other platforms
3. learn how to webgrab and then implement for enigma2.
4. ask your supplier if they have an epg script for enigma2.