When Neville is filling the kettle with water, there is a tub of margarine on the table with the label in English, even though they are meant to be in Germany.
(at around 24 mins) When Wayne and Barry are on the motorbike they pull up beside a car. As they wind down the window the reflection of the boom operator is visible in the the car window.
As Barry says "tara for a bit" to Dagmar, he lowers his head and the boom mike is reflected in his helmet.