UK source for CFL side lighting required

I'm currently running a huge 300w dual spectrum CFL and reflector but for my second grow I want to invest in a couple of small side lights, something in the region of 20w cfls. Can anyone recommend me a good UK retailer where I can purchase the lights and power cables/sockets? My last plant gave some very loose buds so I need to tighten things up!

Don't have the space or ventilation for HPS/MH so it has to be CFL for now.