Well, we don't use 'scullery' very often in EN either, come to that! But where I live, the term 'arrière-cuisine' is quite common in everyday language — maybe because the rural houses around here have them!

But as ever, it all depends on the context! What I know traditionally as a scullery in the UK is very much the equivalent of 'arrière-cuisine' as I see it being used around here.

However, it has to be said that in UK EN at least, a 'scullery' is nothing like a 'butler's pantry' (which is often 'office', BTW) — so it would help to know more about your actual context, so as to be sure.

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Note added at 1 hr (2013-11-27 16:27:31 GMT)
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Where I come from in the UK, people of my parents' generation (i.e. first half 20th century) called it a scullery, but our (marginally!) posher friends called it the 'back kitchen' — at a time when family life still revolved around the kitchen table, just as it still does today here in rural France.

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Note added at 2 hrs (2013-11-27 18:09:57 GMT)
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In modern UK houses, of course, the functions of the old-fashioned scullery have now largely been replaced by the 'utility room' — though that probably will no longer be used for washing pots and pans, but more likely laundry facilities, thereby bringing it closer to the FR 'buanderie'

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Note added at 19 hrs (2013-11-28 10:50:45 GMT)
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Hi Emma! Yes, of course I remember you :-)