I went to an interesting talk earlier this week about SERV, the blood bike service. It's "a charitable organisation that delivers blood products to the emergency and accident hospitals across Southern England at night free of charge when official Health Service transportation services don't operate". As it's run by volunteers and funded by donations, they've been building up support gradually area by area, so although it's been going for a long time in some places, it's only just starting in Wiltshire in October. The local organiser is Kiel McPhillips and he'd like to hear from anyone interested in helping, either as a rider or in some other way.
I think Kiel is a member of the forum, but hasn't been on for some time.