How much someone receives depends on how much their condition affects their everyday life.

Meanwhile, charity Entitled To, says the figure of unclaimed benefits could be even higher than £15billion because Government data isn’t always clear.

On its website it said: “Using the best data we can find we believe over £15 billion is being unclaimed by low income households across the UK.

“This means millions of our poorest families, young people and old people, disabled people, job searchers and workers are not getting the help they are entitled to.”