"You're doing that thing again where you imagine this is a country." Guppy points out. "I only work here voluntarily. I've been known to have to stay with someone continuously for three days..."

He goes to the urn in the corner to get himself some tea.

"I haven't seen any of the others around today. You either have me, or you watch him yourself and have me on call. I can be down in two minutes if bleeped."

He doesn't admit to Nick right now that watching a patient usually involves him attempting to have a kip on the sofa with an alarm clock to check obs when required, unless anything beeps.