Rule 12 of Order 80 is repealed and the following rule substituted:
“(1) A subpoena must be served personally.
“(2) A subpoena is taken to be served personally on a medical expert if, at the place where the expert's practice is carried on—
(a) it is given to a person apparently engaged (whether as employee or otherwise) in the practice and apparently at least 16 years old; or
(b) if a person mentioned in paragraph (a) refuses to accept the subpoena—the subpoena is put down in the person's presence and the person is told of the nature of the subpoena.”.