The MoT inspection manual was updated in January 2021 with the following: 'Existing halogen headlamp units on vehicles first used on or after 1 April 1986 must not be converted to be used with high intensity discharge (HID) or light emitting diode (LED) bulbs. If such a conversion has been done, you must fail the headlamp for light source and lamp not compatible.'

Although the OSRAM website lists a variety of LED-replacement bulbs as 'street legal', the product information states 'Approved LED light source - only applies to the respective countries in which there is approval or to which an equivalent approval applies and the vehicle models and light functions currently listed in the compatibility list.' At present the UK is not listed on this information page as offering compatibility with these bulbs, so we would expect these to result in an MoT failure.