Might be a silly question, but don't you need to have some lantus and NR on standby, in case the pump develops a fault? I hope it never does, of course!🙂
Yes you need to make sure you keep some basal in the fridge incase of pump malfunction.
I carry a syringe when out and about incase of malfunction this way I can draw some insulin from the cartridge in the pump if needed.
In theory a new pump should be with you within 24 hrs but obviously bank holidays cause extra problems as do weekends. Hence why a basal must be kept for an emergency as it would be impractable to inject every few hrs for more than 24 hrs.