Mrs Mukherjee reads to the school children from a book that ends with, "They've caught the man who did it. Everyone knows now that it wasn't your Daddy." The book is "The Railway Children" by Edith Nesbit.
George Costigan (Nevison Gallagher) & Siobhan Finneran (Clare Cartwright) also worked together on Unforgiven (2009) as Eddie Ackroyd & Izzie Ingram respectively.