[2025] UKUT 066 (AAC)
Upper Tribunal Administrative Appeals Chamber

[2025] UKUT 066 (AAC)

Fecha: 14-Ene-2025

Whether the FTT’s error was material

Whether the FTT’s error was material

28.

An “immaterial” error of law is one which would have made no difference to the outcome of the case, and such errors do not normally justify setting aside the decision. The hurdle (to show that a legal error is immaterial) is a relatively high one: an error is immaterial only if the tribunal “would have been bound to have reached the same conclusion, notwithstanding the error of law”, given findings it had made which are not tainted with error (Detamu v SSHD [2006] EWCA Civ 604, at [14]).

29.

I now explain why the error of law in the FTT’s decision was in my view immaterial as regards some information (the emails to HSE from A Ltd from March 2020 and the prohibition notice served on the site developer), but material as regards other information (the contravention letters served against Amark).