Supreme Court Rules 1987

(1) A party interrogated shall answer each interrogatory except to the extent that it may be objected to:

(a) because it does not relate to a question between him and the interrogating party;

(b) because it is unclear or vague or is too wide;

(d) because it requires him to express an opinion which he is not qualified to give;

(e) on the grounds of privilege; or

(f) on any other ground on which objection may be taken.

(2) Without limiting subrule (1)(a), an interrogatory that does not relate to a question includes an interrogatory the sole purpose of which is to:

(a) impeach the credit of the party interrogated;

(b) enable the interrogating party to ascertain whether he has a claim or defence other than that which he has raised in the proceeding; or

(c) enable the interrogating party to ascertain the evidence by which the party interrogated intends to prove his case, including the identity of witnesses.

(3) A party may not object to answer an interrogatory on the ground that he cannot answer without going to a place which is not his usual place of residence or business if the interrogating party undertakes to pay the reasonable cost of his going there, unless the Court otherwise orders.