Anthony Nolan is a UK charity that works in the areas of leukaemia and hematopoietic stem cell transplantation. It manages and recruits donors to the Anthony Nolan Register, which is part of an aligned registry that also includes the Welsh Bone Marrow Donor Registry, NHS Blood and Transplant's British Bone Marrow Registry and Deutsche KnochenMarkSpenderdatei (DKMS) UK. This aligned register is known as the Anthony Nolan & NHS Stem Cell Registry. It also carries out research to help make bone marrow transplants more effective.

The London Marathon is an annual marathon held in London, England. It is the largest marathon in the world, with over 53,700 finishers in 2024, and 840,318 applicants for the 2025 event. Founded by athletes Chris Brasher and John Disley in 1981, it is typically held in April, although it moved to October for 2020, 2021, and 2022 due to the COVID-19 pandemic. The largely flat course is set around the River Thames, starting in Blackheath and finishing at The Mall. Hugh Brasher is the current race director and Nick Bitel its chief executive.