Ok, go easy on me as this is the first link I have tried!!
You may be able to qualify for a grant of up to £2,700. I thought it might be helpful (especially with winter coming up) to have a look at. My girlfriend has applied as we are in a rented property (yes that does count too) and have a child.
They apparently do come around and assess your property, but it's a good venture for if you do qualify :-)
I hope I haven't peed anyone off or anything. Any feedback (negative and positive) would be greatly appreciated.