The judgment in Auckland v Khan & Anor [2018] EWCA Civ 1148 is in short form. However it does illustrate the difficulties of appealing on "pleading points" and findings of fact.
"There are certainly cases in which the failure to put a central feature of a case to a witness is so serious that ...
In my view this decision is wrong and there was an onus on the Jummas to plead and prove the agency.