I've got 6 bulbs in 2 fittings in my living room, and had been trying to decide whether to replace the light fittings and buy 2 Hue/Lifx/Hive bulbs, or to buy a "smart dimmer".
Just seen that the
LightwaveRF Wifi link is heavily discounted at Maplin at the moment - down from £90 to £64 - and as the relevant Skill has just been launched, this plus a dimmer is my most economical option, and involves the least swearing as it's only 2 wires to connect as opposed to, from memory, about 97 in one of the ceiling roses!
http://www.maplin.co.uk/p/lightwaverf-lw930-wifi-link-new-version-a23rx