The first episode which doesn't open with Sylvia watching newsreels at the Odeon.
Nicholas Jones and Peter Jeffrey appeared in s5e4 of Kavanagh Q.C. (End Game).
Ewan McGregor and Nicholas Jones both appeared in Kavanagh Q.C. s1e1 (Nothing But The Truth).
The play Hopper and Lisa go to see is The Seagull by Checkov.
At57.49, Sylvia's breast can be seen.