Ratburger is an odd one. It is a family film through and through, but some of the plot might be too dark for young children. I'm not going to give away any plot spoilers. Talia Barnett puts in a nice performance as the down on her luck girl, Zoe (an actress to look out for in the future), Mark Benton is hugely likeable as Zoe's hard working and caring father, Sheridan Smith clearly enjoyed playing Zoe's chavvy and abusive mother, Nigel Planer seems to be doing an impression of John Cleese in Clockwork and David Walliams is creepy and sleazy as burger van owner, Burt.
I saw this over Christmas and some of the people I was viewing it with questioned if they would show it to younger children. Although played for laughs and darkly comic some of the more sinister plot lines go a stage beyond Charlie and the Chocolate Factory. It's a fun romp though and something enjoyable for most people.