Back to the Future's 25th anniversary reunion

Mind the plutonium … the bash kicked off, as all great birthday parties do, with a cake, this one in the shape of a DeLorean time machine, apparently after snow Photograph: Diane Bondareff/AP IMAGES FOR UNIVERSAL STUDIOS HOME ENTERTAINMENT

Presents, too: the week before, Lloyd and Fox picked up a commemorative gong at the Scream awards in Los Angeles Photograph: Chris Pizzello/AP

Christopher Lloyd (Doc Brown), Michael J Fox (Marty McFly), Lea Thompson (Lorraine Baines) and director Robert Zemeckis were all present and correct Photograph: Diane Bondareff/AP IMAGES FOR UNIVERSAL STUDIOS HOME ENTERTAINMENT

Ditto Mary Steenburgen (right) who plays Clara Clayton in the third instalment Photograph: Charles Eshelman/FilmMagic

Even Huey Lewis turned up (he wrote the theme tune and had a cameo as a teacher) Photograph: Charles Eshelman/FilmMagic

The festivities have gone on a while. Here are Thompson, Lloyd, Steenburgen and Fox, alongside Zemeckis and Lewis earlier in the day Photograph: Richard Drew/AP

And here they all are again, revealing their favourite lines from the series (Lloyd: 'Roads? Where we're going, we don't need roads') and what props they nicked from set (Thompson: the pink prom dress) Photograph: Diane Bondareff/AP IMAGES FOR UNVIERSAL STUDIOS HOME ENTERTAINMENT.

More faces emerge, but there are still a couple missing Photograph: Diane Bondareff/AP IMAGES FOR UNIVERSAL STUDIOS HOME ENTERTAINMENT

Awol No 1: Crispin Glover, who'd be unlikely to show, given his legal wranglings with the film-makers over unauthorised use of his image in the second instalment, which he declined to feature in Photograph: Ronald Grant Archive

Awol No 2: Thomas F Wilson, aka Biff Tannen and all his genealogical iterations. This is much more surprising, especially given Wilson's apparent eagerness to remind people of his link with the films. Thompson, when quizzed, is reported to have said: 'He doesn't like to come out to these things. But he's great.' Is this the full story? Let us know, if you know Photograph: Ronald Grant Archive