You are presumably permanently removing the airbag. Be aware that an airbag warning light on during your MOT will cause your vehicle to fail the test, as it indicates a major safety defect.
The MOT tester checks that the airbag light comes on and then turns off within a few seconds of the ignition being switched on; if it stays illuminated, it signals that the airbag system may not function correctly in a crash, which is a critical safety risk.
"Defect = An airbag fitted as original equipment obviously missing, Category = Major"
MOT airbag
