his is an intense, intimate, spare film about love, grief and dementia, and the two leads, who play a gay couple, are superb.

The film has plenty of low-key charm and humour, not least in Sam and Tusker's believable, tetchy in-car interactions.

Firth and Tucci's performances are remarkable in how delicately they navigate this maze of half-truths and suppressed emotions, all crammed inside their rusty campervan.

Although I think the film fails to illuminate the experience of dementia, and despite its staid and uninspiring construction, I remained committed to the end. This has everything to do with the performance of Colin Firth.