I had my THQ V3’s alignment adjusted by my local garage last week. They are fitted with HIDs. I’d previously discussed with them whether these would fail an MoT (before I fitted the lights and was deciding what bulbs to use) and was told HIDs would fail and it was obvious when HIDs were fitted. Anyways, he adjusted them, I asked if it would pass an MoT, he said yes, I asked, ‘what, even with those HIDs in there?, he looked again and said he couldn’t tell it had HIDs so yes It would pass.
My van isn’t due an MoT so its easy for me to say this, if i was taking it to be tested for real, I’d do a bulb swap to the standard H7’s and swap them back afterwards. It doesn’t take long and saves the hassle of a failed MoT.