In the UK the use of the localiser back beam as an instrument approach is not permitted.
Anyone who uses this procedure in IMC down to minima is treading on extremely dodgy ground. Attempting to use the glide path as well is just plain stupid.
NICK, I don't know about the rest of Europe, but in the UK, ATC are not permitted to alter, switch on/off any instrument approach aid, this has to be done by the telecomunications engineers. This is because the equipment has to be checked that it is radiating correctly prior to being released into service.