Ok so i know these are not the fancy save energy bulbs but they are the cheapest i can find.
working out at 24p a bulb is a steal, last time i bought these they were £10 for 12 on ebay.
post is £2,99 on orders under £80 or free if above.
website description -
The G.E. 60W R63 Diffused Reflector emits a soft, diffuse light that helps create a relaxing mood, and it’s useful for recessed ceiling lights, spotlight fittings, and desk lamps.
BC/B22d Bayonet cap fitting
Warm white, 2700K light colour
Size: L 101 x Dia 63mm