BBC FOUR

7.00pm Beyond 100 Days, Weather 7.30 Railways Of The Great War With Michael Portillo 8.00 Coast Great Guides: Southern Wales 9.00 A Very British History: Romany Gypsies 10.00 Under The Wire – Storyville. Documentary about the final joint assignment of war correspondent Marie Colvin and photographer Paul Conroy in Syria. 11.35 The Art That Made Mexico: