It's set to be an interesting Christmas for mixed-up lovers Marcus and Maria, when they are paid a visit by his parents Ron and Janet Dent.
Television fans may recognise his dad Ron (pictured above), who will be played by none other than Stephen Greif. Stephen is fondly remembered for his part as space baddie Travis in the first series of 70's sci-fi drama Blake's 7, just one of his many roles including parts in Birds of a Feather, Boon and Tales of the Unexpected.
Stephen will be joined by actress Linda Clark, who plays Janet, herself no stranger to the genre, when she appeared as an alien witch called Bloodtide, in a Doctor Who episode from 2007. Linda's other credits include roles in soap Emmerdale and That Peter Kay Thing.
Ron and Janet are set to arrive on Christmas Day to meet Maria, and they're sure to have an opinion on their son's romantic change of partner.
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