SPRINGWOOD Hampstead Theatre

1939: TWO NATIONS, TWO MEN, TWO WIVES It has a familiar sitcom structure: a couple whose marriage is not what it respectably seems, making anxious preparations for weekend guests. Said guests unaware of bohemian structures beneath the necessary decorum of welcome. Awkwardness over drinks, a mother-in-law mentioning the elephant in the room a bit too early. Guests conferring in the bedroom, mistrustful unease over a social event, separate confidences between the two men and two women. There’s even a scandalous bedroom discovery and, at one point, a dropped tray. But Richard Nelson’s is a beguiling history-play, set in 1939 on the eve of WW2 and inspired by a correspondence found 25 years ago between President Franklin Delano Roosevelt and his confidant and probable mistress, Daisy Suckley (delicately played by Rachel Pickup). It imagines the moment when FDR invited George VI and his queen to round off their Canadian tour and brief visit to the World’s Fair by visiting him in the…