Tom Stoppard's BBC2 adaptation of Ford Madox Ford's Parade's End has sharply divided opinions - baffling and boring as many people as it has beguiled - but on one score the consensus has been universal. And that concerns the pellucid, daisy-fresh performance of 22-year-old Australian actress Adelaide Clemens as Valentine Wannop, the bobbed suffragette who manages to breathe passion into Benedict Cumberbatch's crusty, duty-bound "last Tory", Christopher Tietjens.
Valentine could have been a thankless role for a young actress. Clemens could have struggled to shine beside two thoroughbred thespians in Cumberbatch and Rebecca Hall, the latter fed many of the best lines as Tietjens's reckless wife, Sylvia - some aimed against Valentine, her husband's "little games mistress" and "the scrubbed lady's champion of the regular bowel movement". But then a strong pointer to Clemens' beautifully truthful performance can be discerned in the extraordinary determination that she showed in winning the part in the first place.
She was in deepest Louisiana, on-set of a cheapo horror when the script for Parade's End arrived. "I've never been filled with such conviction that I needed to pursue a role. I thought about it constantly. Literally, they would shout 'cut' on the horror film and I'd run back to my trailer and I'd be reading all these books that I bought on the Pankhursts."
After badgering casting director Karen Lindsay-Stewart, Clemens was granted a Skype conversation with Parade's End director Susanna White. "I was in this revolting hotel room in Louisiana, with a terrible internet connection so there was a 15-second delay," she says. "My final 'no' was after that. I was heartbroken, but at the same time I kind of thought that, based on that [Skype interview], that it was ridiculous. I literally wrapped the horror film and booked a plane for London, and asked Susanna for 15 minutes of her time. I thought it would be a good idea to show up in full period dress as I couldn't let a pair of jeans come between me and playing Valentine. I walked from Euston to Soho in full period dress."