A Boulevard Theatre Production

The Effect

Love. Drugs. Same symptoms. Different effects...?

Written by Lucy Prebble
Directed by Anthony Neilson 

19 March - 30 May

Sold Out

This event has now finished.

Please note that in line with guidance from the government and Society of Official London Theatre, upcoming performances of The Effect are postponed until further notice. We will be directly in touch with ticket buyers, and will update all customers as and when we are able to safely reopen the building and commence operations. We thank you for your understanding at this difficult time. 

Connie and Tristan meet; symptoms develop. Racing hearts. Lost appetites. Erratic emotions. Is this the frenzy of falling in love, or simply the side effects of the new anti-depressant drug they’re testing?

Addiction comes hard and fast. But have the clinicians running the trial lost control?

Award-winning writer Lucy Prebble places modern medicine under the microscope, examining the fallout from a collision between love and science. Her other plays include A Very Expensive Poison (Old Vic), ENRON (Chichester, Royal Court, West End) and The Sugar Syndrome (Royal Court).

The first London revival of The Effect is directed by Anthony Neilson, who has worked extensively as both a writer and director. Credits as writer and director include The Tell-Tale Heart (National Theatre), The Prudes and Unreachable (Royal Court).

Please note we advise an age guidance of 16+ for this performance. If you have any questions about the show’s content, please email for more information.

Full price: £36, £29, £24
Preview and concessionary rate: £28, £21, £16
Access rate: £18
Roulette tickets: £12

Run Time: TBC

Captioned Performance:  Friday 22nd of May 2020 at 7pm.
Touch Tour: Saturday 23rd of May 2020  – please contact the box office on for more information
Audio-described Performance: Saturday 23rd of May 2020 at 2pm

The concessionary rate is available on Mondays and Thursday matinees for Soho residents, over 65s, under 25s, students and unwaged and is subject to availability. Soho residents can only purchase tickets at the concessionary rate in person at our box office.

Members of our Access Membership scheme can purchase up to two tickets for any performance at the access rate of £18 (more details are available here).

For only £12, a Roulette Ticket guarantees you a seat for the show. However, that seat could be anywhere, from the front row to the back of the balcony – fancy a flutter? Check out the small print here.

Our prices may increase as the house fills – book early for the best price!


Writer Lucy Prebble
Director Anthony Neilson
Designer Natasha Jenkins
Lighting Design Nigel Edwards
Sound Design and Composer Helen Skiera
Casting Julia Horan CDG


Tristan Frey Eric Kofi Abrefa
Dr Lorna James Christine Entwisle
Dr Toby Sealey Tim McMullan
Connie Hall Kate O’Flynn