David Tennant has revealed he was struck by how "high maintenance" politicians are when it comes to their looks, while researching his new role.
The 42-year-old former Doctor Who star plays an MP who finds himself eclipsed by his wife in new BBC drama The Politician's Husband, Paula Milne's long-awaited follow-up to The Politician's Wife.
David, who appears to be sporting highlights in the role, admitted: "Watching a lot of the political faces we see regularly on the news, I was struck by how coiffed they are.
"They often seem to go for a sort of Eighties soap star kind of look, but then you're expected to look sleek and slick."
The Broadchurch actor - who stars opposite Emily Watson in the new drama - compared the performance of politics to his own stage career.
He said: "What I found fascinating to imagine was the sheer stress of that life - the burden of it. But at the same time you could sense the buzz that people get out of it too.
"The high you get when you deliver something well in the House is like having a fantastic first night on stage and getting all the best reviews. It gives you that kind of a hit," added Tennant, whose depiction of Hamlet in 2008 was met with critical acclaim.
The actor admitted he's a sucker for a bit of political drama. "The West Wing is probably my favourite television series of all time," he said.
"There are very few areas in life where the stakes are so high; where the power struggles influence not just the lives of the people involved, but also the lives of everyone they represent."
:: The Politician's Husband is a three-part drama beginning on BBC Two on Thursday, April 23.