Is it unreasonable for charities to set fundraising targets for participants of their events?

Is it unreasonable for charities to set fundraising targets for people participating in their events? That's the question being asked by the Children's Centre after changing the requirements for people taking part in its Race the Sun challenge this year. For the first time, it's asking competing teams to raise a minimum of £650 between each of its ten members, but says it's received backlash online for making the move. Joff Whitten is the Head of the Children's Centre and has been speaking to Amy Griffiths: