Steve (and others) - you need to meet certain qualifying conditions as well, so here are those for people in receipt of income-based ESA:
You’ll usually get Cold Weather Payments if you get income-related ESA and have any of the following:
•a severe or enhanced disability premium
•a pensioner premium
•a child who is disabled
• Child Tax Credit that includes a disability or severe disability element
•a child under 5 living with you