Outlander's Caitriona Balfe visits Blood of My Blood cast in Glasgow as Ellen MacKenzie star opens up on experience

Outlander star Caitriona Balfe surprised her Blood of My Blood co-stars on set as they filmed the prequel in Glasgow.

Filming for the highly-anticipated series kicked off earlier this year and will explore the love story of Jamie's parents, Ellen Mackenzie (Harriet Slater) and Brian Fraser (Jamie Roy) and Claire's parents, Julia Moriston (Hermione Corfield) and Henry Beauchamp (Jeremy Irvine) in World War I England.

The Claire Fraser star visited the set and 'said hello to everyone' according to Harriet Slater, who spoke to RadioTimes.com to promote her role in the new horror film Tarot.

The actress also revealed that Caitriona 'seemed excited by the whole thing.'

Despite little being revealed about the series, Slater told RadioTimes.com that fans can be assured it will still have the same essence as Outlander, but admitted that it is completely different.

"It's a long shoot. I think it's so nice that we have the solid foundation of Outlander, but it has an entirely new cast and feels very much like its own thing," she explained.

"We have the same team as Outlander and we film in the same building, but aside from that, our paths don't really cross much at all."

Other confirmed cast members include Doctor Who's Tony Curran, Ozark and Payback star Peter Mullan and Sara Vickers of HBO's Watchmen and ITV's Endeavour.

Get the latest celebrity gossip and telly news sent straight to your inbox. Sign up to our daily Showbiz newsletter here.