Video: The Inbetweeners on the big screen

Actors Simon Bird, Blake Harrison, Joe Thomas and James Buckley star as four teenage friends in the TV comedy The Inbetweeners.

They are now making their debut on the big screen with their film called The Inbetweeners Movie.

The film premieres in London on Tuesday evening. The cast spoke to BBC Breakfast about what fans can expect from the film.

James Buckley: Inbetweeners is 's***'

Inbetweeners star James Buckley called the sitcom that launched his acting career 's***' as he promoted The Inbetweeners Movie alongside co-star Simon Bird.

James Buckley: Girlfriend wants the baby in Scotland

Inbetweeners star James Buckley has revealed his model girlfriend plans to make sure their baby is born in Scotland.

Inbetweeners star James Buckley to be a dad

In The Inbetweeners, his character Jay Cartwright is renowned for his immature behaviour and unbelievable bragging about his fictional sex life. But in reality, actor James Buckley is set to take on the most grown-up role of his life - by becoming a father.

I must confess that I hadn't seen the previous two editions of this Only Fools and Horses prequel. It's a shame because I rather enjoyed this (most probably) final outing.

In this episode, the young Del Boy (James Buckley) decides to find his fortune by going into movies, proposing his cinematic masterpiece Dracula on the Moon. Meanwhile, gangster and father of Rodney, Freddie "The Frog" Robdal (Nicholas Lyndhurst) is trying to avoid being arrested after a robbery he carried at during The Jolly Boys Outing.

The thing you have to remember when watching Rock & Chips is not to treat it as a sitcom but as a comedy drama. There are no real belly laughs, but a few chuckles along the way. At times it is rather tender. It is also ruder. I cannot recall an episode of Only Fools which included the phrase: "F*** off".

The series is basically the backdrop to everything we have already seen in the original classic series, with many references to the Only Fools, such as Del's fondness for the song "Old Shep".

Sadly, this looks to be the final edition of the series following the death of writer John Sullivan, to whom the episode was dedicated to. Of course they could always get another writer to continue it, but there seems little point. As it is a prequel, we already know what happens. We know that Robdal is blown up during a botched raid, that Joan (Kellie Bright) dies young, that Reg (Shaun Dingwall) leaves the family when Rodney's aged two, and that it is not the last time Del has an idea for a movie - but like Dracula on the Moon, There's a Rhino Loose in the City also never took off.

It is a pleasing hour of well written material, and John Sullivan will be sadly missed.

The third instalment of this baffling Only Fools and Horses prequel was scheduled before writer John Sullivan's death from viral pneumonia on Saturday.

For that reason, it'll get a much kinder critical reception than would otherwise have been the case. But I will now never get to ask Sullivan what possessed him to rewrite the nation's sitcom as a drama (or at least a sitcom without any discernible jokes).

It's 1962 and we're following the love affair between Rodney's mum Joan (Kellie Bright) and his criminal father Freddie (a moustachioed Nicholas Lyndhurst).

The young Del Boy (James Buckley) has got himself a Lambretta and a fiancee called Barbara (Jessica Ashworth). The scene in which we meet her middle-class parents offers a flash of what this might have been.

Sullivan's death means we can probably expect more Only Fools and Horses repeats in tribute, which will be much better to remember him by than this.

It's 1961 and Joan is still keeping the Trotter fortunes afloat, as the late John Sullivan's comedy about the early lives of the Trotter family returns for a one-off special.

Joan has two jobs, one at the Ritz cinema and the other as wrong 'un Freddie Robdal's charlady, while Del (James Buckley) romances half the girls in Peckham. Meanwhile, Det Insp Thomas is keen to make an arrest for the Margate gems heist.

The late John Sullivan's prequel to Only Fools and Horses staggers on to 1962 with Del and Rodney's mum, Joan (Kellie Bright managing to be both sassy and naive), holding down two jobs to keep the Trotter family going. Meanwhile, Rodney's biological dad and smooth criminal Freddie Robdal (Nicholas Lyndhurst) is being hounded by DI Thomas (Mel Smith at his jowly best) for the Margate jewellery heist, and young Del (James Buckley) has got engaged to a posh bird called Barbara. Samantha Spiro and Alex MacQueen give wonderfully over-the-top, cartoon-like performances as the up-market Birds. The disdainful yet bewildered expression on their faces when they hear that Del's dad is a docker is akin to that of Downton Abbey's Maggie Smith when she enquired exactly what a weekend is. But, despite these moments, most of this is clunky and charmless. And lovely Lambrettas and Golden Egg restaurant aside, some of the period detail is strangely unconvincing. Yet audiences have loved earlier outings. An enduring nostalgia for the Trotters maybe.

Another one-off special for the Only Fools And Horses prequel, centring on the lives of the Trotter parents. Light-fingered Freddie Robdal (Nicholas Lyndhurst) is being investigated for the jewellery heist in Margate that ended the last Rock & Chips outing but, for all his wits, it looks like his affair with Del Boy's sweet mum Joan (Kellie Bright) might be his undoing. In the meantime, the teenage Del (The Inbetweeners' James Buckley) is hanging out with his pals, chasing girls and coming up with more hair-brained money-making schemes. Amusing enough, but it's actually the more charismatic and colourful grown-ups - Lyndhurst, Bright and copper Mel Smith - who keep this pukka.

John Sullivan, the marvellous comedy writer who created Only Fools and Horses, died at the weekend aged 64. Tonight his prequel of Only Fools, Rock & Chips, returns. Showing the misadventures of a young Del Boy Trotter, it was partly inspired by Sullivan's own youth in South London (the significance of the title, he said, was that in those days "rock music and chips was what we lived off"). Nicholas Lyndhurst (Rodney Trotter in Only Fools) plays local gangster Freddie Robdal, with James Buckley as Del Boy and Kellie Bright as Joan, Del's mother and Robdal's mistress. In tonight's episode, Del Boy turns his charms on well-to-do Barbara Bird (Jessica Ashworth), and the police pursue Robdal over the Margate jewellery heist.