Seriously-ill patients in Kent say they're being let down by the hospital transport service.A group which goes to the renal unit at Kent and Canterbury for kidney dialysis blames G4S for failings.Seriously-ill patients in Kent say they're being let down by the hospital transport service.A group which goes to the renal unit at Kent and Canterbury for kidney dialysis blames G4S for failings.We were joined in the studio by Doctor Julian Spinks to talk more about it.