Knitted ‘blood drops’ filled trees outside Sheffield railway station as part of an appeal to attract donors.
An event run by NHS Blood and Transplant saw branches in Sheaf Square ‘yarnbombed’ with the handmade objects to reflect the campaign’s slogan ‘Blood doesn’t grow on trees’.
Yarnbombing involves decorating buildings and public spaces with woolly items, often to raise awareness of an issue or worthy cause.
Volunteers created a total of 8,000 knitted ‘blood drops’ to use at events nationwide.
Visit Blood doesn’t grow on trees for more information.