A birthday party is planned for Robert Crawley, but Lady Rose’s (Lily James) surprise contribution to the event ruffles feathers both above and below stairs.

"No one must know," says Lady Rose to Mrs Hughes (Phyllis Logan) of hiding the jazz band. "We'll get the carpets rolled up and everything arranged during dinner. So when his lordship walks out of the dinning room, there it is."

Mrs Hughes isn't so sure about this plan and responds with many questions: "And we'll have to hide them, until then? So I'll have to find them food and beds? How many are there?"

Rose explains there won't be that much hiding involved and adds that she thinks there are only six, 'but she'll check'.

Nice Lady Rose, how efficient of you.

Meanwhile, Thomas (Rob James-Collier) is sniffing around pretending to be worried but Mrs Hughes soon puts him in his place.

"I'm afraid that you'll have to continue to worry," she says, refusing to give up the plans.

* See episode 6 of the fourth series of Downton Abbey on Sunday at 9pm on ITV