Wondering what the difference between butler sinks and belfast sinks? Let the experts at Sinks.co.uk explain: "In actual fact they are both butler sinks (ie made to go in the butlers pantry), but those made in Belfast have a Weir overflow, while those made in London dont. "This is because, when butler sinks were first made in the late 17th century, each major city had a sanitation officer autonomously responsible for the ordering of pipes, basins, sinks, and decreeing sizes, styles etc. Different patterns were evolved and gave rise to specific types. Hence the Belfast butler sink was different from, say, the London butler sink. "Belfast, with access to plentiful water housed sinks with overflows, but London , built on clay where deep wells had to be drilled to reach water, discouraged water wastage and no overflows were accommodated. Therefore, the Belfast butler sink has what is known as a Weir overflow built into it, whereas a standard Butler Sink doesnt." Cheers guys - I think weve learnt something new today!