CHAPTER TWO
Offences
PART IV
OFFENCES AGAINST THE ADMINISTRATION OF JUSTICE
Interference with Witnesses
Causing person to refrain from giving evidence at criminal trial
374. Any person who, with intent to defeat, obstruct, or pervert the course of justice at the trial of any other person for any crime, in any manner causes the other person to refrain from giving evidence at such trial, is liable on conviction on indictment to imprisonment for seven years.
Causing witness to disobey summons or not to produce evidence
375. Any person who, in any manner wilfully causes any other person to disobey a summons, subpoena, or order—
(a) for his or her attendance as a witness in any judicial proceeding; or
(b) for the production by him or her of any written or other evidence in any judicial proceedings;
is liable on conviction on indictment to imprisonment for five years.
EDIT.