Wow.. Fan-F-ing-tastic report!!
Somehow I missed this report when first posted. Dihedral is an absolutely brilliant route. I'm so impressed with your pics. I went down dihedral at end of Aug 2021 but I didn't dare take a camera and the mate I went with too only took about 4 pics with some sketchy handheld that didn't come out. Your pics are amazing, it's a hard place to get a decent shot and those are really really good ones too.
Jugging back out is a bit of a workout, especially if you're the muggins with the rope bag hanging below you! GG Dihedral was my first ever cave so I've a soft spot for it (same for my mate who followed me down but in his case it put him off!! ha ha). Recommend trip for any srt folks here, give dihedral a go if they've never tried it. It's a cracking adventure. Oh, and did I mention how bl00dy good your pics are?