Led lights as far as I am aware are illegal unless self leveling and self cleaning. I know that HID dipped must still be lit while main is on, not sure about led's.
''Part 6.2.9. "Other requirements" says: "Dipped-beam headlamps with a light source or LED module(s) producing the principal dipped beam and having a total objective luminous flux which exceeds 2,000 lumen shall only be installed in conjunction with the installation of headlamp cleaning device(s) according to Regulation No. 45.”
Part 6.2.6.2.2 says "... devices which are adjusted manually, either continuously or non-continuously, shall be permitted, provided they have a stop position at which the lamps can be returned to the initial inclination defined in paragraph 6.2.6.1.1. by means of the usual adjusting screws or similar means. These manually adjustable devices shall be operable from the driver's seat."
However, part 6.2.9. says “With respect to vertical inclination the provisions of paragraph 6.2.6.2.2. above shall not be applied for dipped-beam headlamps:
(a) With LED module(s) producing the principal dipped beam; or
(b) With a light source producing the principal dipped beam and having an objective luminous flux which exceeds 2,000 lumen."
So, these laws say you must have washers and automatic levelling only if the light source is more than 2,000 lumens total output, or the light is produced by LEDs (of any brightness), according to (b), above.''
Now this is where people get confused, because of careless wording by VOSA they are not an MOT fail if washing and leveling systems are not fitted, its illegal to fit them if these things don't exist on the car but the MOT cannot fail them , the MOT can fail if self leveling or washing systems don't function correctly.