The performances are tip top. Never for a moment do you see Johnathan Slinger as anything other than this shambolic, stressed, impulsive and maladroit academic and Rosie Sheehy is a great find making the journey of the play from failing underconfident student to assertive and eloquent woman. Do not miss this play!
Neither actor really pulls off Mamet's very difficult first act. Full of unfinished sentences and interruptions, it is very hard to play it as fast as it needs to be played and still ensure that the English audience will grasp it. But your perseverance will be rewarded after the interval when the play concentrates less on academia and dry educational approaches and more on power and both actors get into the swing.