Diane Keaton, Lulu and Patricia Hodge on making a film together in their 70s

The three stars are playing lovelorn women who get a chance to be girls once again. What did they learn? Our writer spends a day on set of Arthur's Whisky with the trio and their co-star Boy George.

Arthur's Whisky review

Diane Keaton and Lulu in enjoyable body-change comedy.

Ophelia Lovibond on playing Robin in Mr Sloane

It is easy to see why she has already been likened to Woody Allen's original muse Diane Keaton. Apart from their shared striking looks, her comic timing is impeccable.

Last year's first series of Last Tango was both a surprise hit and proof that the BBC wasn't entirely comprised of sneering ageists. The familial drama - centred around a pair of septuagenarian lovebirds - has reportedly even been snapped up by Diane Keaton with a view to an American remake.

We've got two pieces of advice for Diane, should she be reading. Firstly, don't try and cast Woody Allen to play opposite you, cute though it may sound on paper. Secondly, if you reach a second series, don't start it on quite such a sombre note as this new run begins on. Whereas the first series began with the joys of new-found love (and the lols of seeing oldies on Facebook), we reconvene tonight after Alan's (Derek Jacobi) heart attack.

If that wasn't enough of a bummer, the delicate romantic entanglements of the pair's respective offspring make for a slightly confusing 15 minutes. Yet, despite the absence of any initial sugar-coating, Last Tango thankfully remains as charming and well played as ever.

Warm, romantic and BAFTA-winning, Last Tango In Halifax was a bona-fide hit last year, neatly refuting the idea that there's no audience for "stuff about old people" on TV.

It's even getting an American remake with Diane Keaton. So it's no surprise that it has quickly been brought back, nor, given that much of its strength lies in its near real-time pace, that the story resumes moments later.

Yet pacing might prove to be an issue this year, as the reunited sweethearts Alan and Celia (Derek Jacobi and Anne Reid) are now an established couple. Having missed 60 years together, they have surely too much sense to fall out again over minor misunderstandings. Their respective daughters (Nicola Walker and Sarah Lancashire) are still entangled in complicated love lives, but this can't really take over the focus of the series from the older generation. So where will the drama lie?

In the first episode, this isn't really resolved, as Alan recovers from his health scare and Celia organises their wedding, while the younger characters continue to flail. But it's still such a warm and well-observed show - with lovely bits of dialogue and performances - that maybe it doesn't matter.

Diane Keaton plans US remake of Last Tango in Halifax

The star has acquired the rights to the BBC One hit about childhood sweethearts rekindling their romance in their 70s.