After a £7,000 diversion to Bristol, Carolyn forbids Martin to make any more diversions in the future. Partway to Abu Dhabi, however, Douglas realizes that, despite reminders about the cargo-hold heating, Martin has left a client's cat in the unheated hold. Martin must decide whether to divert or to let the cat freeze. Meanwhile, Arthur attempts to discover how aeroplanes fly.
Guest Cast: Ewen MacIntosh as Karl
