There have been plenty of films about mountains, and they are mainly about men. The plot tends not to vary: man clambers up peak because, as Mallory famously reasoned, it is there. Whether factual or scripted, often they are disaster movies too: Everest, Touching the Void, the astonishing German film about the race to conquer the vertical wall of the Eiger, North Face.

Ian McEwan has said that he decided to adapt his 2007 novel On Chesil Beach for the screen himself at least partly because he did not want anyone else to do so (with earlier works, including Atonement, he was glad not to have taken on the adaptation). The sensitivity of the original lies in its interiority, a quality that moves medium with far more difficulty than most. It’s a moot point whether the challenge could have finally been met by anyone, but somehow Dominic Cooke’s film, his screen debut, never quite attains the perfect, lonely poignancy of the book.

That said, Cooke has made a film of quiet quality, his most emphatic achievement to draw such high-calibre performances from his two principals, Florence Ponting (Saoirse Ronan) and Edward Mayhew (Billy Howle). Elaborating their story feels somehow redundant: On Chesil Beach is surely one of those films which most viewers approach knowing at least the outline of the story. It seems equally extraneous to note that the ill-fated wedding night of these lovers is set in 1962, so ubiquitous have been the accompanying references to Philip Larkin (his Annus Mirabilis in particular, with its references to the following year, “Between the end of the ‘Chatterley’ ban/And the Beatles’ first LP”).

The social details are so expertly captured that they seem practically carbon-dated 

It’s very much to Cooke’s credit, too, that he has brought no cheap embellishment to a stark story in the way that Hollywood might have done (the screen rights were first with Ang Lee, apparently). The back-and-forth between the couple’s in-the-moment honeymoon unease and their earlier acquaintance and courtship is subtle, as is the way in which character is defined by music – Edward’s jazz set against classical for Florence (the gradations of the latter, from the optimistic expanses of Mozart to the tempests of Beethoven, are nicely caught). (Pictured below: Billy Howle, Saoirse Ronan)

So too their respective family worlds. There’s the contrast between the freedom, the lack of order at the country cottage that is Edward’s home (it's located in some generic English screen-idyll village), and the sterner, harshly defined setting of Florence’s Oxford. It certainly pays, adaptation-wise, to add full visual context for the accident that defines Edward’s mother (Anne Marie-Duff, never overplaying but always poignant). The embellishments chez Ponting are more subtle, though that’s hardly the first word that comes to mind for Emily Watson’s image-breaking performance as Florence’s mother. (One does wonder how the Ponting household, where Iris Murdoch – once famously defined into her bonking and bonkers periods – seems to be on speed dial, has so disregarded sex, including education in aforesaid.)It leaves the trimly-moustached Samuel West, playing Geoffrey Ponting, whose very name seems to have a brisk home-counties efficiency to it, as the dark force of the piece. McEwan’s adaptation underplays his book’s more emphatic hint at abuse, leaving us with just a moment’s ambiguous eye contact between father and daughter across the deck of the family yacht. But the scene in which West, after soundly defeating Edward at tennis before then realising that Florence has been watching, positively explodes, signals with semaphoric clarity that something is very wrong in this family world.   

On Chesil Beach, book and film alike, leaves us to ponder the circumstances that brought these protagonists to such a seismic coincidence of anger and fear, one that will annihilate their youth and hope. For these are two lovers who cannot step out of themselves, out of their time, the social details of which are so expertly captured by Cooke and his design collaborators that they seem practically carbon-dated.

Was McEwan consciously aware, writing his story, of another literary honeymoon, another beach, another century, a different poet – “Ah, love, let us be true/To one another! for the world, which seems/To lie before us like a land of dreams…” – and the possibility of a different conclusion to marital desolation? The inability to act – to turn back, to reconcile – is as tragic as action blundered, but it’s not quite tragedy that defines McEwan’s conclusion, rather acute poignancy (another speciality of Larkin). Perhaps the sole false note of Cooke’s film comes in its final scene, one that channels emotion in the most familiar cinematic terms. Until then, On Chesil Beach has been a film of close sensitivity, in which Saoirse Ronan – musician that she is – plays never less than exquisitely.

• Read more film reviews on theartsdesk

Overleaf: watch the trailer for On Chesil Beach

British director Andrew Haigh's Lean on Pete is a heartfelt and surprisingly stark affair.

This weekend sees the Brighton Festival 2018 kick off. Anyone visiting the city on Saturday 5 May would find this hard to miss as the famous Children’s Parade makes its way around the streets, a joyous dash of colour and creativity. This year’s theme, in honour of Brighton Festival guest director David Shrigley, is “Paintings”. Thus every school in the area has been assigned a famous painting on which to base their parade presentation. The results are guaranteed to be an eye-boggling public showcase.

After the success last year in taking the Festival to outlying areas of Brighton, Your Place returns in 2018. This means that, once again, local groups and committees in Hangleton and East Brighton have joined forces with the Festival - its artistic and theatrical resources and contacts - to put on a raft of events and activities in those areas. Much of this will be happening later in the month on the weekends of 19-20 May and 26-27 May.

Elsewhere its art a-go-go from the start with a free exhibition at the Phoenix Gallery from Californian painter Brett Goodroad, whose figurative abstract work is attuned to the subconscious, and David Shrigley’s Life Model II, a free interactive piece wherein visitors can contribute their own visions of his nine foot tall female sculpture.

Shrigley will also be putting on his own “alt-rock/pop pantomime”, Problem in Brighton, which will surely be worth a look, and giving a talk (“numerous rambling anecdotes but will not be in the slightest bit boring”) later in the festival (23 ^May).

Others involved in interviews and talks include novelists Rachel Cusk and Rose Tremain, local Green MP Caroline Lucas, London psychogeographer Iain Sinclair, children’s author Michael Rosen, and musicians Brett Anderson and Viv Albertine. In fact, this year’s Festival is particularly strong on contemporary music, with performances by Ezra Furman, The Last Poets, Deerhoof, Malcolm Middleton, Amanda Palmer, This Is The Kit, Joep Beving, Les Amazones D’Afrique, Jungle, Xylouris White and others.

All the above, of course, only skims the surface of Brighton Festival 2018’s hive of activity. There’s also a feast of theatre, circus, classical, children’s fare, dance and hosts more. It’s a very good time to hit the south coast.

• Find out more about Brighton Festival 2018

Overleaf: Watch a 15-minute guide to BSL-interpreted, captioned and highly visual performances at Brighton Festival 2018