This year I'm doing the Wye Valley Challenge in aid of CLIC Sargent https://www.clicsargent.org.uk/content/who-we-are  - the UKs leading charity supporting children and young people with cancer. 

Donating through JustGiving is simple, fast and totally secure. Your details are safe with JustGiving - they'll never sell them on or send unwanted emails. Once you donate, they'll send your money directly to the charity. So it's the most efficient way to donate - saving time and cutting costs for the charity.