This?
http://www.amazon.com/gp/search/ref=sr_nr_i_0?rh=i%3Agourmet%2Ck%3Abrick+pastry&keywords=brick+pastry&ie=UTF8&qid=1260801622
Ah, but in the UK… that’d be a problem.
Amazon.co.uk doesn’t have food, nor amazon.fr.
However, they’re also called Feuilles de Brick, which I found here: http://www.frenchclick.co.uk/p-512-jr-feuilles-de-brick-x10-carrees.aspx
Waitrose sells it for £1.89 for 10 sheets
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