Have you a picture of your downlighter with lamp in? Usual replacement is a flat coin shape.
if your bulb holders have reflectors then G4 replacements as the ones described should be ok. Some of my down lighters though are encased in a fitting with a built in reflector similar to the below (MR16)
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Both good points.I would buy a couple to start off and check you like the colour and brightness. You may want less led's if too bright. If you find them unsuitable stick them in the bog or shower and try another option.
Aten go to all the major shows
I bought a mixture of Aten (for the most used), LedBulbs4U (new ceiling fittings) and eBay cheapies (which have been OK so far.thanks all.. great info..
thought mine were a bit cheap..
I need ten..
but as a start will replace the five most used..