We’re in (pretty much literally so in this most intimate of venues) an Edwardian sitting room, time hanging heavily in the air, gentility almost visibly fading before our eyes.

They say "never meet your heroes". That may be true, but it forms the premise of a new TV drama concerning two of the world’s most famous children’s authors – Beatrix Potter and Roald Dahl – who encounter each other at opposite ends of their life. 

With over one hundred books to her name and several hugely popular TV spin-offs, including the Tracy Beaker adventures, Jacqueline Wilson takes a no-nonsense approach to children’s fiction that reflects the realities of jigsaw families, mental and divorce. In 2012, in something of a detour from the rest of her work, she wrote a sequel of sorts to E. Nesbit’s beloved magical children’s classic, Five Children and It.  

It’s been 15 years since Cameron Mackintosh’s stage musical version of P. L. Travers’ Mary Poppins made its West End debut.

Githa Sowerby is the go-to playwright if you want a feminist slant on patriarchy in the industrial north in Edwardian times. Her 1912 classic, Rutherford and Son, has been regularly revived over the past 30 years, and now the National Theatreis staging it yet again, this time with the ever likeable Roger Allam in the title role.

If this play really were “A Debate in One Sitting” as its author called it in 1909, it would have sunk without trace. “Talk, talk, talk, talk”, complains Hypatia Tarleton (Marli Siu), daughter of an Edwardian underwear magnate. Sick to death of the menfolk talking at her and over her, she longs to be “an active verb”, and we sympathise.

Even by the standards of theatrical archaeology that the Finborough has made its own, The Passing of the Third Floor Back is a curiosity. Jerome K Jerome’s 1908 play was a long-running hit in the West End – with Johnston Forbes-Robertson, one of the leading English classical actors of his day, in the lead – before transferring to Broadway for a year.

George Stiles and Anthony Drewe – Stiles and Drewe, as the songwriting partnership is universally known – are responsible for one of theatre’s most memorable acceptance speeches. Their show Honk!, staged at the National Theatre after an initial run in Scarborough, won the Olivier for best musical in 2000. Among the defeated musicals was Disney’s all-conquering juggernaut also featuring a menagerie of animals.

Graeme Murphy's 2002 Swan Lake for Australian Ballet stitches together plot elements from Swan Lake, Giselle and Lucia di Lammermoor, among other things. No bad thing, that; such mash-ups can work well (see Moulin Rouge), and Matthew Bourne proved way back in 1995 that Swan Lake's story can be totally reconfigured and still work gloriously (we do not talk about the 2011 film Black Swan).

It has taken six years – and Michael Crawford – to bring Richard Taylor and David Wood’s poetic musicalisation of LP Hartley’s The Go-Between to the West End stage. And before the tired old debate begins as to what it is – opera? musical? play with music? – let it be said that what really counts for something here is the storytelling.