TV & radio guide - Thursday

Routes of English (9.00 am R4). The dialect of Derry/Londonderry.
Crossing Continents (11.00 am R4). Bangladesh’s eunuchs
The Material World (4.30 R4). Food scientists Andy Taylor and Don Mottram on flavour com£.
Document (8.00 R4). The albatross in Captain Cook’s journals and Coleridge’s Ancient Mariner .
Analysis (8.30 R4). Would it matter if the EU was dissolved?
The Windsors (8.00 C4). Eighty years in the life of a royal family. First of a four-part series.
What Rubbish? (8.05 World Service, repeated Friday 2.05 am and 3.05). Susie Emmett with the second of three programmes on the worldwide problem of domestic and industrial waste.
Heritage (8.30 World Service, repeated Friday 2.30 am and 3.30). How archaeologists are unearthing ancient and historic British gardens, from Roman Fishbourne to Biddulph Grange, a 19th-century pleasure garden.
Horizon (9.00 BBC2). Supermassive Black Holes – the new discovery from earlier this year that may point to the notorious black holes’ role in creating, not destroying, galaxies. My preview tape wasn’t captioned, but among the half-dozen or so astrophysicists explaining what is “still just a theory” are Karl Gebhardt and Joe Silk.
The Great Train Robbery (9.00 C4). About the 1963 crime. Channel 4 doesn’t bill this as a repeat, but I seem to remember a programme with the same title going out in the Secret History series in August last year…
Leading Edge (9.00 R4). New research on the Canadian Arctic by Nasa.
Night Waves (9.30 R3). The life of Lucy Hutchinson (1620 – ??), poet and memoirist.