There needs to be a "revolution" in societal attitudes towards organ donation so more lives can be saved, the NHS Blood and Transplant (NHS BT) has said.
The proportion of families who agree to organ donation after the death of a family member remains "stubbornly low", NHS BT spokeswoman Sally Johnson said.
Figures show that during 2013/14, more than four in 10 families approached about organ donation said no to donating a loved one's organs.
"Family refusal is our biggest problem and it's sad we lag so far behind some other countries in terms of consent/authorisation rates to donation," she added.
More top news
Billionaire Microsoft co-founder Paul Allen has claimed discovery of the Japanese battleship Musashi that was sunk by the US Navy in 1945.
Friday will be mostly dry with sunny spells for much of the UK. Temperatures will be mild across the country.
Some famous Liberal Democrat names will be fighting for their political lives in the election, now just over two months away.