Conversation so far:
When did John Mortimer start his legal career?
John Mortimer was called to the Bar (Inner Temple) in 1948.
What firm did John Mortimer work for?
John Mortimer was called to the Bar (Inner Temple).
What type of law did John Mortimer practice?
John Mortimer's early career consisted of testamentary and divorce work.

Question: Did that change later in his career?
Self-contained rewrite: Did John Mortimer's legal work change later in his career?