I firmly believe that light fittings should simply plug in and out. There should be absolutely no need for a consumer to tackle wiring even simple choc blocks/boxes.
Systems like MK's link should be made standard on all light fittings and should be installed in place of ceiling roses. It would mean that consumers could simply buy a light fitting and safely install it in seconds.
Here's the socket that would be on the ceiling, includes physical load support for the light fitting preventing cable strain.
[This message has been edited by djk (edited 08-28-2003).]