Doctor Who star Karen Gillan has revealed that fans can “expect tears” when she bows out of the show in two weeks time.

The actress will be seen as the Doctor’s sidekick Amy Pond for the last time in the fifth episode of the current series – while her screen husband Rory, played by Arthur Darvill, will also depart.

And she admitted she was glad to be going out in an episode written by series creator Steven Moffat and featuring the Weeping Angels.

“Stephen has written such a fantastic ending, I expect tears,” she said.

Moffat said that viewers could expect “heartbreak” in the episode, adding, “We see the Doctor and his little Amelia Pond race through the streets of Manhattan to save Rory with help along the way as River Song charges back on to our screens, just in time to say goodbye.”

The latest series will also see the return of the Timelord’s military allies – the UNIT – who first appeared on the show in 1967.

The UNIT – which is short for Unified Intelligent Taskforce – is now led by Kate, played by actress Jemma Redgrave, and will be seen for the first time in next Saturday’s episode The Power Of Three.

Matt Smith said they were returning, “for the fans,” adding, “I think they like cyclical things and we have a good story. It was great to do an episode with UNIT and I hope the true fans like it.”