I can now bring you the full exchange of what must be the only use of Dutch in the whole Who canon (as far as I remember there isn't any in Arc of Infinity even though it is set in Amsterdam).
Van Lutyens: Verdomme!Abineri's accent in Dutch is, er, not quite as far from the real thing as his attempt to reproduce a Dutch accent in English (which sounds simultaneously German and African), but I suppose a decent effort from someone who didn't speak the language. Would be interested to know what others make of the adjective he uses - I think he is mispronouncing "koppige" as if it were a German word (given that he spoke German), though even then it's an odd pronunciation of the "g".
Fraser Hines, narrating: From a walkway overlooking the Control Hall, the Doctor and his companions observe van Lutyens storm off.
Van Lutyens: Koppige [?] idioot! Engelsman!
Jamie: What does kopples iddy oo [?] mean?
The Doctor: I think he's Dutch, Jamie, and I don't think he likes the English very much.
Note also that the Tardis translation circuits don't seem to work in Dutch.