A talking book costs about �2,500 and takes five days to record

Crime author Ruth Rendell and Gosford Park writer Julian Fellowes are backing a Royal National Institute for the Blind (RNIB) call for government funds.

The RNIB, which is marking its talking book service's 70th anniversary, says 96% of books are not available in audio, large print or Braille form.

Mr Fellowes said the government needed to "get involved" in funding services.

Mr Fellowes, the chairman of the RNIB's talking books appeal, said: "It is a really useful thing and it is not exactly neglected, but there is a kind of acceptance that it is just the job of charity to do it.

"There are 10,000 titles which, of course, is great, and I don't mean to diminish that, but there are 100,000 books published every year so that shows how little access the blind have to our output.

"I just think it is something governments have to get involved in."

Children's author Jacqueline Wilson is also backing the RNIB's fundraising appeal, entitled Give the Joy of Reading.

Support bid

Subscribers pay �70 per year for access to the RNIB library.

Books are sent out on CDs and played on machines specially designed for those with poor sight.

Author Julian Fellowes has voiced six talking books for the blind

RNIB spokeswoman Ciara Smyth said: "We want the government to support us so that we can work in partnership with publishers and other organisations so we can produce more books, because 96% of books are not produced in accessible formats.

"We have got to be able to do something to produce more books."

Since the service began, some 75 million talking books have been lent to people with sight problems in the UK.

The Talking Book Service was developed for the thousands of servicemen who were blinded in the trenches of the First World War.