Lana has officially lost three coin flips in a row during the UK trip, which means she has to stand up on a packed rush hour tube and sing the national anthem. Si couldn't believe his luck after Lana flipped the coin herself and ended up losing again.
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FULL SHOW: Si & Lana 14th October
33:47

Si and Lana went on a Jack the Ripper tour in London
04:56

THAT'S SLIGHTLY INTERESTING: the River Thames is cleaner than you think
04:50