I quite enjoyed this. I actually think the actor playing Roger did well with an English accent; he fooled me. Usually when an actor is trying an English accent it really affects their performance. I thought he'd been in the US a while and picked up a bit of an accent and their terms ('mad' for 'annoyed'), and thought he WAS English!
The lead lady with the odd name (viva a fox) did a great job, although her clothes were a tad small, the makeup too much (she didn't need it) and the way she carried her handbag (which must have been glued to her arm) was distracting and comical. Mum, dad and sister gave poor performances, as did the Warhol look alike boss. Obviously not actors.
Good story, silly but enjoyable.
The ending is the worst I've ever seen. Seemed they made something up quickly. It has to be seen to be believed.
A nice Christmas film (despite the script, some poor performances and a dreadful ending.