LED Headlights Retrofit

Hi, my car was originally fitted with halogen headlights with manual levelling (no automatic levelling). The manual level can be controlled with a knob in my dashboard. If I were to install a new pair of purpose-built LED headlights that don't have neither automatic or manual levelling, would this fail my MOT? The knob in the dashboard would essentially become useless.

This is the knob:



Thanks!