Thanks to Series 4 of Inspector Lynley, I’ve now got a complete (and hilarious) mental picture of Noah and Imogen. Nathaniel Parker minus a few inches, height-wise, with gray eyes like the Seventh Doctor? Combine Sophie Aldred with Sharon Small (Soph’s eyes, Sharon’s face shape, don’t know whose hair)?
Other notable “cast members”:
My mental picture of Noah’s sister Audrey is Lalla Ward.
Bill Nighy plays the Headmistress’s husband. I rather expect Zoe Wanamaker would do as the Head herself.
How about David Tennant for young Terry? and Emma Watson for Pat Forbes?
It helps if I have mental pictures. The more vivid, the better.