19:00Mark ForrestFood percentages, public info films and tattooists spotting cancerBBC Local Radio Duration: 3 hours Wed 13th Apr 2016, 19:00 on BBC Radio DerbyIs bad maths making us fat? It's claimed we can't work out food percentages. Also public info films, tattooists spot cancer, eels, scams, talking chickens, fat sheep and more.GenresEntertainmentBrandMark Forrest Source: BBC Online