Following the mixed reception given to the first Rock & Chips earlier in the year, the Only Fools and Horses prequel was back for a second hour-long Christmas instalment last night. The leap in tone from John Sullivan's original laugh-a-minute sitcom to this '60s-set comedy-drama remains a little disappointing, but there was still much to enjoy.

Once again, The Inbetweeners' James Buckley was spot-on as the teenage Del Boy, who was now trying to make a not-so-honest living by selling knock-off US rock records in the market. True to form, he was also desperate to have his wicked way with any girl who happened to cross his path - and set about improving his chances by dishing out fake diamond engagement rings to a couple of likely candidates.

Poor Amita (Chandeep Uppal) was overjoyed at becoming Del's fiancée - although her joy turned to anger when she uncovered his plot. Still, she did get a delightful hand-knitted sari from Del's nan, Violet (Paula Wilcox), so it wasn't all bad news. Meanwhile, Del failed to impress another fiancée's parents when he went round for tea. However, the entire scene was stolen by the girl's granny who exclaimed - twice - that her coq au vin tasted like "s***".

I mention the swearing granny only because this marked one of the few occasions when I actually laughed out loud (yes, my sense of humour really is that juvenile). Because while Del's exploits provided welcome comic relief - even if you could see most of the jokes coming a mile off - the real focus of Rock & Chips was on his mum Joan (Kellie Bright) and her on-off affair with mustachioed wheeler-dealer Freddie 'the Frog' (Nicholas Lyndhurst).

Bright's bittersweet portrayal of the proud, put-upon Joan, who wishes she could swap lives with Elizabeth Taylor, was genuinely moving. But all that emotion made it feel more like an episode of Heartbeat at times.

It's Christmas 1960 and the Trotters are settling into their new flat in Sir Walter Raleigh House, Peckham. In this second prequel to Only Fools and Horses, 16-year-old Del (The Inbetweeners' James Buckley) has left school. Very much the fledgeling wheeler-dealer, he's busily flogging 45s straight off the back of a boat from America and getting engaged to half of sarf London in the hope of creating some lustful opportunities. Rodney's still a baby, of course, and his father, the roguish but debonair Freddie "the Frog" Robdal (Nicholas Lyndhurst), has been temporarily detained. In Wormwood Scrubs. The first serving of John Sullivan's Rock & Chips last January gave many critics indigestion but it went down well with viewers, who didn't mind the lack of belly laughs. There are some cracking performances here, too: Robert Daws is splendid as a sleazy cinema manager and Paula Wilcox as Reg Trotter's mum surely must be closely related to Catherine Tate's Nan.

Five Rings can't utilise the element of surprise like the first episode did 12 months ago, but all the strong characters and understated yet charming writing is still present. The real difficulty many of the naysayers had with the programme at the start of the year was that it did not contain the same belly-laughs that OFAH did, but when taken for what it is (a gentle comedy drama), Rock and Chips still delivers low-key entertainment, cosy nostalgia and no small amount of wit.

Tonight's episode is set during Christmas of 1960. A very Inbetweenerish Del Boy has left school and started an apprenticeship at the university of life and street hawking. Watching James Buckley attempt to get girls into bed by faking a marriage proposal is eerily familiar of his other show and in templated sitcom fashion, he ends up stringing a couple of girls along. But Derek's petty tax misdemeanours and comic love-life are safely offset by his warm-hearted charm and an all-conquering love for his mother.

The same can not be said for his feckless old man, who has had his disability stopped ("I've been sacked from the dole!") and still hasn't realised how lucky he is to have a lady like Del's hot young mum. As before, Phil Daniels is brilliantly cast as a younger Granddad and Robert Daws is a treat in his fleeting reprisal of the sleazy self-pleasuring cinema boss, but we are also introduced to a couple of new characters, among them the much talked of Grandma Trotter. Yet despite some stiff competition, it is Nicholas Lyndhurst who steals the show - and Joan Trotter's heart - as the patrician but besotted super-criminal and father of Rodney. Just keep your fingers crossed that Freddie 'The Frog' Robdal doesn't end up back to the Scrubs. Reg Trotter is a tit.

The concluding part of the Only Fools and Horses 1996 Christmas trilogy remains the most-watched UK sitcom episode of all time, drawing a mind-boggling 24.3m viewers. This prequel, a follow-up to a successful first episode in January, is an attempt to slake our thirst for all things Trotter. It is Christmas 1960, and the 16-year-old Del Boy (James Buckley) is wheeling and dealing his way around the docks (for money) and Peckham (for girls). Meanwhile Freddie Robdal (Nicholas Lyndhurst, playing the father of his old character Rodney, who is just a baby here), is in and out of mischief (and prison).

John Sullivan on Rock & Chips: Five Gold Rings

The 90-minute Rock & Chips film which was aired last January ended on the 2nd November, 1960, with the Trotter Family ensconced in their new high-rise council flat with the addition of the just born baby Rodney.

The second prequel to Only Fools and Horses, set in 1960/61, in which Nicholas Lyndhurst plays the cerebral criminal who, it turns out, fathered Rodney Trotter and reappears in the life of Del Boy's dear old mum for more repressed romance. The Inbetweeners' James Buckley stars as the young Del, flogging imported Buddy Holly singles at the market and engaging in multiple dalliances, including one with a young Indian girl. One suspects this will be an annual fixture - it's watchable but apart from a good gag about knitting saris, the mirth of OFAH has been replaced by post-Heartbeat 60s period eye candy.

James Buckley: 'I take playing Del very seriously'

James Buckley returns as a young Del Boy in a Christmas special of Rock and Chips. And he reveals this is where Del's wheeling and dealing begins...

Nicholas Lyndhurst interview

TV Choice chats to Nicholas Lyndhurst about playing Freddie in the Only Fools And Horses prequel...

Rock and Chips for Christmas return

'Only Fools and Horses' spin-off 'Rock and Chips' featuring Del Boy as a teenager will be back on TV for a Christmas special.

James Buckley starts 'Rock & Chips' filming

James Buckley has revealed that filming has started on the second series of Only Fools and Horses spin-off Rock & Chips.