Last modified on Wed 26 May 2021 07.38 EDT The West End play Walden, starring Gemma Arterton, is to resume performances after a possible Covid safety risk led to the last-minute cancellation of Tuesday night’s show. Just over 10 minutes before the curtain went up at the Harold Pinter theatre in London, Sonia Friedman Productions tweeted an apology that the performance would be cancelled and that ticket holders would be contacted to arrange an exchange or refund. A statement released on Wednesday said: “Last night, information was received at 6.45pm that a member of the production had potentially been exposed to the virus whilst not at the theatre, and on the advice of the production’s