I'm doing a half marathon in April to raise money for Amnesty International. It's a personal challenge, because I've never run further than 10km, and it's for a great cause. Any amount, whatever you can spare, will add up and be used to protect humanity and human rights.

When injustice happens to one person, it happens to us all.

Recent campaigns include refugee and migrant rights, climate change, children's rights, women's rights, Syrian conflict and LGBTI rights. Amnesty's biggest achievements include outlawing torture, holding war criminals to account and controlling the arms trade.

Your support is of significant value - only together can we continue to make a difference.