‘Postal service of a claim form by the court in disregard of the claimant’s request to return the claim form to him so that he could serve it personally, in breach of CPR r 6.4(1)(b), was an “error of procedure”, within rule 3.10, and so did not invalidate service.’
WLR Daily, 15th May 2014
Source: www.iclr.co.uk