Stephen Boxer, Patrick O’Kane, Kevin Harvey, Rakhee Sharma, Amaka Okafor, Penny Layden, Trevor Fox, Parth Thakerar, Beatrice Scirocchi, Anna-Maria Nabirye, Hannah Hutch, Nadia Albina, Joshua Lacey, Andrew Frame, Nicholas Karimi, Alana Ramsey and Michael Balogun is to join the cast of the play Macbeth at the National Theatre