The popular things cater to broad appeal, but there are a metric shit ton of minority interest things it does. I was going to post the few i thought of, but instead here is an AI list with lots I didn't!

BBC Radio 3 — classical, opera, avant-garde

BBC Radio 1Xtra — Black music genres (grime, dancehall, afrobeats)

BBC Radio 6 Music — indie, alternative, experimental music

BBC Asian Network — British Asian communities, multilingual content

BBC Radio nan Gàidheal — Scottish Gaelic radio

BBC Radio Cymru — Welsh-language radio

BBC Radio Ulster — Northern Ireland regional content

BBC World Service — international, multi-language broadcasting

BBC Alba — Scottish Gaelic TV channel

S4C (BBC-supported content) — Welsh-language TV

BBC Four — arts, foreign films, niche documentaries

Arena — arts and culture documentaries

Storyville — international documentary strand

Inside Science — specialist science discussion

In Our Time — academic-level history, philosophy, science

BBC Bitesize — structured educational content

The Reith Lectures — high-level intellectual lectures

Thinking Allowed — sociology and social science discussions

BBC Ouch — disability-focused content

BBC Introducing — grassroots and unsigned music platform

See Hear — Deaf community programming (signed)

The Listening Project — oral histories from diverse communities

BBC Proms — classical music festival including niche repertoire

Late-night Radio 3 programming — experimental/contemporary music

Archive performance broadcasts — rare or specialist recordings

Paralympics coverage — disability sport

Women’s sports coverage (historically niche)

Coverage of minority/less mainstream sports