Barton v Wright Hassall [2018] UKSC
The Claimant, acting as litigant in person, had served a claim form upon the Defendant via email when that method of service was not accepted by the Defendant. It was made clear by Lord Sumption, on a majority vote of three to two, that there is no special category for litigants in person and they should not be treated differently in the application of the CPR.