4.10.—(1) A document served under rule 4.3 or rule 4.8 is served on the day it is handed over.
(2) Unless something different is shown, a document served on a person by any other method is served—
(a)in the case of a document left at an address, on the next business day after the day on which it was left;
(b)in the case of a document sent by first class post or by the equivalent of first class post, on the second business day after the day on which it was posted or despatched;
(c)in the case of a document served by document exchange, on the second business day after the day on which it was left at a document exchange allowed by rule 4.5;
(d)in the case of a document transmitted by electronic means, on the next business day after it was transmitted; and
(e)in any case, on the day on which the addressee responds to it, if that is earlier.
(3) Unless something different is shown, a document produced by a court computer system is to be taken as having been sent by first class post, or by the equivalent of first class post, to the addressee on the business day after the day on which it was produced.
(4) Where a document is served on or by the court officer, ‘business day’ does not include a day on which the court office is closed.