Funnily enough there were collectors out for Alder Hey in Manchester City Centre earlier and we have a large children's hospital of our own.
Maybe university RAGs getting started up as they collect for all different charities. Possible this lot were as all young people in various animal style onesies.
We used to go where the better money was, especially for larger appeals, usually down South and around the South Coast. We'd do tours sometimes, sleeping on floors, for charities like Children in Need and Marie Curie.