Brilliant Mathematician brings War to Early Victory

“A computer would deserve to be called intelligent if it could deceive a human into believing that it was human,”

Alan Turing The Turing test

Mark Edel-Hunt as Alan Turing and Peter Hamilton Dyer as Dillwyn Knox (Photo: Manuel Harlan)

This revival and tour of Hugh Whitemore’s 1986 play, Breaking the Code about the brilliant mathematician and computer designer Alan Turing makes a welcome stop at the Oxford Playhouse.  Mark Edel-Hunt is outstanding as the polymath who had a persistent speech stammer.  The play looks at his early life, his work on solving the German Enigma Code and his work developing computers but also the difficulties he had as a gay man, when homosexuality was illegal.

He committed suicide aged 41 in 1954 and died from cyanide poisoning, a half eaten apple by his side.  There was no note and there were many who thought in view of the spying scandals around John Vassal and Guy Burgess, both gay men and with vulnerabilities of blackmail for gay men, that in view of his knowledge, Turing was murdered by the Security Services. 

The play covers about two decades of Turing’s life but he and his mother (Susie Trayling) also describe his first day at Hazelhurst Preparatory School, when he was nine years old.  This remembrance is important because it is the only example of the cold hearted mother’s description of affection towards her son. When he was 13, his first day of term at Sherborne School was during the General Strike and over two days he rode his bicycle 60 miles to get from Southampton to Dorset.

Mark Edel-Hunt as Alan Turing (Photo: Manuel Harlan)

It was his work at Bletchley Park on the Enigma Code where he was part of a team of the best mathematical brains and logicians secretly working on solving the code the Germans were using to communicate their plans worldwide.  The play’s scenes before and after the war are played in a very similar set and Turing wearing the same suit; I had to work hard to realise which era I was in. 

The play opens with Turing being interviewed about a burglary at his house by a policeman Nick Ross (Niall Costigan) which leads to the police discovering Turing’s homosexual relationship with 19 year old Ron Miller (Joe Usher) for which he is prosecuted and, in order not to go to prison, Turing accepts the administration of oestrogen or as it was known “chemical castration”.  It would be another 14 years before homosexual acts in private between consenting adults was made legal.  Turing admits his homosexuality. 

At the end of the play Neil Bartlett has written an epilogue set in the present day at Sherborne School where a sixth former (Joseph Edwards) pays tribute to Alan Turing and explains LGBTQ advances and how Turing has received the Queen’s Pardon regarding his conviction for gross indecency. 

Joseph Edwards as Christopher Morcom, Mark Edel-Hunt as Alan Turing and Susie Trailing as Mrs Sara Turing (Photo: Manuel Harlan)

Turing’s first love was his colleague Christopher Morcom (Joseph Edwards) where they shared the love of mathematics.  Hugh Whitemore’s play has scenes with a colleague of Turing’s Pat Green (Carla Harrison-Hodge).  There were many bright women working at Bletchley Park and Pat Green fell in love with Turing’s brilliance and he cared for her but tells her he is a gay man. 

Those who can follow the cryptology will be satisfied by the detail in Whitemore’s play but I confess much of it went over my head.  Jonathan Fensom’s flexible wooden panelled set serves well as offices, studies and home.   There are two scenes where the house lights are left on, the first where we see Turing delivering a lecture and the second at Sherborne School, see above. 

Jesse Jones does a great job of direction in this well thought out production showing Turing’s passion for his subject.  As he nears a solution we see excitement in Turing’s body language in this incredible central performance from Mark Edel-Hunt.  Highly Recommended! 

Niall Costigan as Nick Boss, Mark Edel-Hunt as Alan Turing and Joe Usher as Ron Miller. (Photo: Manuel Harlan)

Production Notes

Breaking the Code

Written by Hugh Whitemore

With an epilogue by Neil Bartlett

Directed by Jesse Jones 

Cast

Starring:

Susie Trayling

Carla Harrison-Hodge

Mark Edel-Hunt

Niall Costigan

Peter Hamilton Dyer

Joe Usher

Joseph Edwards

Creatives

Director: Jesse Jones

Designer: Jonathan Fensom

Lighting Designer: Johanna Town

Composer and Sound Director:  Robin Colyer

Fight Director: Kev McCurdy, Sam Lyon-Behan

Movement Director:  Gerrard Martin
 
 
Vocal/dialect coach: Gemma Boaden
 
 
 
A ROYAL & DERNGATE,
 
NORTHAMPTON, LANDMARK
 
THEATRES AND OXFORD
 
PLAYHOUSE CO-PRODUCTION IN
 
ASSOCIATION WITH LIVERPOOL
 
EVERYMAN & PLAYHOUSE AND HOME
 
 
 

Information

Running Time: Two hours 30 minutes with an interval

Booking to 11th October  2025 at Oxford

and then on tour

 

Theatre:

Oxford Playhouse

11-12 Beaumont St

Oxford OX1 2LW

(Rail: Oxford)

Website: oxfordplayhouse.com

Reviewed by Lizzie Loveridge

at the Oxford Playhouse on 7th October 2025

Touring to 

New Theatre Peterborough. 

Tue 14th – Thu 16th October 2025

Everyman & Playhouse, Liverpool

Tue 21st – Sat 25th October 2025

HOME, Manchester 

Tue 28th October to Sat 1st  November