light beam level should be set to zero for the uk roads if you raise the level by switch or mechanically adjust them you will be putting your light beam patten out of pattern, it can and will fail its mot, however if its just on switch the mot tester will change it to zero if it the headlamp adjustment that has raised the beam then they can either fail the test so you have to apy for another one or they could charge you a fee for adjusting it back to normal pattern.
adjusting the beam to higher level will dazzle other road users and oncoming traffic which could lead to accidents
adjusting the beam to higher level will dazzle other road users and oncoming traffic which could lead to accidents