Knight bows out at Lord's

Isa Guha speaks to England's record-appearance-holder Heather Knight as she retires from international cricket. Alison Mitchell speaks Isa, as well as former team-mates Katherine Sciver-Brunt and Alex Hartley about her legacy as an England great, the impact she's had on, and off, the field, and where her nickname 'Trev' comes from.