When the government announced that fees charged by pension providers could be capped, some listeners were sceptical that the benefits could be as great as was being claimed. Tim Harford and Money Box presenter Paul Lewis explain why the numbers do add up. It's claimed that an average of 100,000 Christians die as martyrs every year; Ruth Alexander and Tim Harford fact-check the widely-quoted statistic. Plus, Number Hub mathematician Matt Parker presents his guide to imperial measures; is Britain's railway really Europe's 'most improved'? And when six cyclists died in just two weeks in London, was that a cluster in a random distribution, or a sign that something is systematically wrong with road safety in the capital?