Consumer finance expert Martin Lewis and singer-songwriter Tanita Tikaram join host Harriett Gilbert to talk about books they love. Martin reads to relieve stress, is a lover of historical fiction and has picked the first in CJ Sansom's Shardlake series. Harriett chooses spy thriller Slow Horses, while Tanitas's choice, Gentlemen Prefer Blondes is the only book this week not to feature a beheading