From a local paper...............
""Throughout the making of the series, Chowdhry and fellow cast members Richard Armitage, Ciaran McMenamin and Zoe Telford were accompanied by their real-life counterparts.
"They were on set advising us when we did procedures. What was interesting was we were in awe of what they do, but they'd be there watching us and saying things like: 'God, I don't know how you do it. It's really good that you can remember the lines'.""