This provides:
Where a claim form has been issued against a defendant, but has not yet been served on him, the defendant may serve a notice on the claimant requiring him to serve the claim form or discontinue the claim within a period specified in the notice.
The period specified in a notice served under paragraph (1) must be at least 14 days after service of the notice.
If the claimant fails to comply with the notice, the court may, on the application of the defendant–
dismiss the claim;
or
make any other order it thinks just.
D gave 14 days’ notice, expiring on 10 June 2016. On the afternoon of 10 June C undertook personal service at the nominated solicitors’ offices. C thought it had done enough. D applied for the claim to be dismissed on the basis that the claim form was deemed served on the second business day thereafter (in this case 14 June) by virtue of CPR 6.14.