16.4—(1) Particulars of claim must include—
(a)a concise statement of the facts on which the claimant relies;
(b)if the claimant is seeking interest, a statement to that effect and the details set out in paragraph (2);
(c)if the claimant is seeking aggravated damages(GL) or exemplary damages(GL), a statement to that effect and his grounds for claiming them;
(d)if the claimant is seeking provisional damages, a statement to that effect and his grounds for claiming them; and
(e)such other matters as may be set out in a practice direction.
(2) If the claimant is seeking interest he must—
(a)state whether he is doing so—
(i)under the terms of a contract;
(ii)under an enactment and if so which; or
(iii)on some other basis and if so what that basis is; and
(b)if the claim is for a specified amount of money, state—
(i)the percentage rate at which interest is claimed;
(ii)the date from which it is claimed;
(iii)the date to which it is calculated, which must not be later than the date on which the claim form is issued;
(iv)the total amount of interest claimed to the date of calculation; and
(v)the daily rate at which interest accrues after that date.
(Part 22 requires particulars of claim to be verified by a statement of truth)