The Circle at the Oxford Playhouse from Tuesday, February 6, to Saturday, February 10 Review by JON LEWIS SOMERSET Maugham’s 1921 drama of marital infidelity, The Circle, dramatises how some upper-class women trapped in loveless marriages bolt from their husbands to live with a more exciting man. The play, revived by Tom Littler for the Orange Tree Theatre where he is the artistic director, in a co-production with Bath Theatre Royal productions, is set in the years after the First World War when class still determined behaviour. Maugham focuses his lens on two women from different generations …