Toby Jones in WSJ

In the Wall Street Journal blog "Speakeasy" Rachel Dodes speaks to Toby Jones, who plays Percy Alleline, the power-broker senior figure in the Circus in TINKER, TAILOR, SOLDIER, SPY. There's lots of interesting takes on John le Carré's classic, including a part on the acting challenge in constantly appearing suspicious.

it's fascinating as an acting exercise to keep yourself a possible suspect so you are very hyper-aware of every minute gesture you do. If you are around a table, the fear you are doing too much, scratching your hand or involuntarily picking up a pen-- you are giving away whether you are or aren't a suspect. It's a neurotic context to act in.