Who is Lilly from London Transports and what is their importance? London_Transports English & Literature Lilly | London Transports

Lilly is Rita's friend and co-worker, from whom Rita borrows a black wool cape to wear to her and husband Jeffery's dinner meeting with Ken and Daisy, Lilly is excited by the prospects of drama. She insists on coming along to the station to watch the meeting, promising to pretend not to know Rita. It turns out that Lilly knows Daisy, but as Peggy, an old family friend.