Bought a Tesco Compact Florescent today only to find it a bugger to fit as there was a bulged section on the bayonet that prevented it fully engaging in the (IKEA???) wall uplighter. Managed with a bit of a struggle - but I would have thought that bayonet caps would be very standardised.
A lot/most of these bulbs that I have seen, seem to be designed not to fit in many lamps... ones with small plastic/metal cylinders around/above the bayonet fitting. Or are the lamps designed to prevent use of said bulbs?
Alex
My fitting has a plastic cylinder around the bayonet - not a proper "skirt".
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