[quote="Stanner"]In the recent MOT rule changes (i.e. from Dec 2011) an aftermarket HID conversion is an automatic fail.
No ifs, no buts.[quote]
That's not a problem (if it is true - why no reference?). All the conversion kits I've seen allow you to replace the original bulbs by putting them into the headlamp and connecting the leads to them instead of the HID inverter.
Later: I've done some research. The car forums are awash with comments to the same bit of text that you quoted, none with any attribution. However, I did find a source in the bi-monthly newsletter to MOT testers (issue 4
, which has an article about anticipated changes to MOT tests. On this subject it says:
Other items – such as headlamp
bulb and unit incompatibility,
headlamp levelling devices and
illegal engine ‘chipping’ – will need
further thought before we can get
a workable solution for MOT
Interestingly, the article at http://www.dft.gov.uk/pgr/roadsafety/drs/hidheadlamps
seems to say that these are illegal unless washers and self-levellers are fitted. However, it seems that self-levelling suspension is sufficient for this. "(...some expensive estate cars have "self-levelling suspension" and that is adequate)"
It says "or the after market, a used vehicle cannot obtain type approval because it is only applicable for new vehicles. However we feel that saying "HID is banned in the after market" would not be reasonable." They go on to say that the standards need to be maintained, but there is to be no "total ban".
Sorry to spoil the shock story with facts...