Richard Osman talks in depth to Michael Rosen about his life in language: from growing up loving TV and sports, to working on Pointless and then writing The Thursday Murder Club. And you can download the longer Word of Mouth podcast version to hear their conversation in full. Download button on the BBC programme page. Link to all the Word of Mouth podcasts: https://www.bbc.co.uk/programmes/b006qtnz/episodes/downloads Producer Beth O'Dea

Sanmeet Kaur has been interpreting for her parents since the age of five, when her family arrived in the UK from Afghanistan. Producer Sally Heaven

Karli Witkowska is the subtitler behind films and TV shows including Stranger Things. She explains to Michael how descriptions such as 'tentacles wetly squelching' enhance the experience of Deaf and hard of hearing viewers as well as being entertaining in themselves. Producer Sally Heaven

Giles Poyner has worked in marketing and advertising for over twenty years and has worked on some of the biggest global brands. He explains how when it comes to marketing food and drink words really do matter. From taking every day slogans that we then associate with a brand to employing iambic pentameter to create taglines that stick in the customer's head. Although companies are using ever more sophisticated means to sell their products, clever slogans have been around for longer than we think. Almost 100 years in fact. Producer: Maggie Ayre

Ellen Jovin is a grammar and language fan. Her book Rebel With A Clause: Tales and Tips From A Roving Grammarian details her travels with her Grammar Table. Keen to engage with people face to face rather than online Ellen purchased a fold up table and set off on a road trip around the United States setting up on street corners and waiting for people to talk to her. The idea was that people could come and ask her about language and grammar without being made to feel stupid. Common questions included when to use commas and semi-colons and the right way to say 'nuclear' (think George Bush). Although she had lots of fun on her trip and met many interesting people along the way, Ellen's main intention is to help people with written and spoken English presentation in their public and working lives without the need for grammar books. Producer: Maggie Ayre