The creative seed, once planted, can take a long time to germinate and come into bloom – in this case 37 years. For Victoria Wood, 1974 was a seminal year – she turned 21, she won New Faces and she saw a Thames TV documentary about the Manchester Children’s Choir who famously sang Purcell’s "Nymphs and Shepherds" with the Halle under Sir Hamilton Harty in the Free Trade Hall. That recording, featuring 250 children from 50 Manchester schools, was in 1929 and the resulting 78rpm Columbia record became an unexpected hit, selling a million copies.

"Onward we go," the hearty but essentially hapless Wilson Mizner (David Bedella) remarks well into Road Show, the Stephen Sondheim/John Weidman musical that has been slow-aborning, and then some, since it first appeared in workshop form in New York as Wise Guys in 1999. Three titles and two directors later, the same material has been refashioned into the restless, always intriguing, fundamentally incomplete musical now at the Menier Chocolate Factory, the south-London venue whose Sondheim forays to this point (Sunday in the Park with George, A Little Night Music) have generally struck gold.

A village green, a little big top - and War and Peace. Sometimes large ambitions come in the smallest packages, and one can only take one’s hat off to the ambitious, pocket-sized Giffords Circus for setting out to squish Tolstoy’s four-volume epic of love and internecine war into a very small sawdust ring, with horses, jugglers, aerialists, clowns and gymnasts. And as you park your car on the green and wander over under the quiet afternoon sky to the cute white tent where a rackety little brass band is parping and blaring from inside (and check out the “War and Pizza” trailer for the interval), you are in for a ridiculously good time.

For a couple of years now British theatre has been harvesting a new crop of young female talent. Market leaders such as Lucy Prebble (Enron) and Polly Stenham (That Face) have made a splash in the West End, and where they led many others have followed.

The remarkable thing about Caryl Churchill, Max Stafford-Clark has said, is that she is "completely new, every time she comes out of the box". Watching the first act to his revival of her most celebrated work, which Stafford-Clark revisits for Chichester Festival 29 years after he directed its Royal Court premiere, you feel Top Girls isn’t so much being lifted fresh from that box as bursting through the lid.

It's the hard-hitting hoedown of high summer. Old Vic supremo Kevin Spacey being reunited with director Sam Mendes for the first time since 1999's American Beauty was bound to make 'em whoop, and their new production of Richard III doesn't disappoint. It's big, bellicose and full of braggadocio, as it should be: the play works best as a series of melodramatic blasts - Gloucester's opening soliloquy, his wooing of Lady Anne, Queen Margaret's curses, Gloucester's mock reluctance at becoming king, his nightmare and defeat as King Richard at Bosworth.

John Gay’s 1728 satirical drama was the first ballad opera. The vernacular work not only cocked a snook at the Italian operas that were so in vogue in 18th-century London, but it also lampooned Whig politician Sir Robert Walpole and the British love for scoundrels. It was an instant, huge hit; as a witticism of the time had it, The Beggar’s Opera made Rich gay, and Gay rich.

There are few absolutes left in contemporary theatre. Fourth walls have long since crumbled underfoot; site-specific and immersive theatre experiences have further done away with divides between theatre and world, performer and audience. The one principle you can rely on is that consciousness is generally a good thing – that a play capable of putting you to sleep is bad. Oh, and that turning up to an opening night in your pyjamas is guaranteed to get you sent straight home again. Step forward maverick theatre company Duckie and their new show Lullaby, hoping to change all that.

One of the many strengths of new writing for the stage is that it’s not afraid to go into the darkest and most upsetting places of the human psyche. Whether at the Royal Court or at the Bush or Soho theatres, young playwrights have dived in to explore the grimmest reaches of our imaginations. Hundreds and Thousands, which opened last night, is Lou Ramsden’s powerful and compelling account of one family’s descent into a nightmare.

As further proof that Shakespeare plays come these days not as single spies but in battalions, the London leg of the all-male Propeller ensemble's lengthy tour has pitched up in the capital in time to deliver their Richard III within days of Kevin Spacey's debut in that very role at the Old Vic. Think of it as the battle for supremacy over the Bard's second-longest play or not, one thing seems clear: you're unlikely to find as abundantly bloody and brutal an account of this particular Shakespearean horror show for some while to come. Is director Edward Hall bidding to become the British theatre's very own Tobe Hooper? On the dazzling evidence of his Richard, that would appear to be the case.