I review books for the Irish Times and the Dublin Review of Books as well as for academic journals such as Food and History, Journal of British Studies and Irish Historical Studies.
Here are a couple of samples: http://www.drb.ie/essays/irish-visionaries; http://www.irishtimes.com/culture/books/out-of-ashes-by-konrad-jarausch-more-modernity-than-any-reader-can-take-1.2385472; http://www.drb.ie/essays/birds-of-a-feather#
I regularly review academic manuscripts for Manchester University Press.
I have carried out similar work for Palgrave MacMillan and the journals Irish Historical Studies and Food History.
I review for the popular media, too, and am happy to receive manuscripts or books for review.
Some of these review essays are accessible via my academia.edu page