A father has put his kidney up for auction for at least £50,000 to pay for his daughter's medical treatment.
No bids have yet been received for Mr Randall's kidney
Peter Randall, from Sevenoaks, in Kent, used the internet site Ebay.
The kidney has a reserve price of £50,000 and is described as coming from a "non-smoking male who drinks only socially and is in good health".
The Department of Health has warned the 49-year-old he is breaking the law and could face prosecution.
Mr Randall said he decided to try to sell his kidney to fund treatment for his six-year-old daughter Alice, who has Cerebral Palsy.
While paying for a transplant organ is illegal in most countries, there is a thriving black market.
Mr Randall told the Sun newspaper he and Alice's mother, Jennifer Stanbury, 44, had already spent £30,000 on a new therapy known as conductive education to help her walk.
They want her to attend a special school in Billingshurst, West Sussex, which provides the education.
But he said more money was needed to enable her to continue that type of treatment.
Mr Randall said: "I can survive with one kidney. It is a small price to pay to see my little girl take her first steps."
Alice has been going to a mainstream primary school that has a physical disability unit attached.
But her parents want Kent County Council to fund her special education.
A council spokeswoman said Mr Randall had appealed to an independent tribunal over the decision not to fund the education but had lost the case.
She said: "Professionals who have expertise in special needs education believe this is a suitable and appropriate placement for Alice where she can continue to learn in a safe and happy environment."
No bids yet
Ms Stanbury's mother, Margaret, confirmed Mr Randall was trying to sell his kidney.
"It is a very difficult situation," she said.
Health Minister Rosie Winterton said: "The trading of human organs for profit is illegal and it will stay that way.
"It will also remain illegal to advertise organs for sale.
"This government will not allow the exploitation of vulnerable people and the buying and selling of human bodies or their parts in this way."
A Department of Health spokesman said it would be up to the police whether to take any action against Mr Randall or against Ebay.
Ebay has so far received no bids for the kidney, which has been on sale for a week.
According to the website the kidney is available subject to "correct medical standards and compatibility" and could be posted to a buyer in the UK, Middle East, Asia or Europe.