A method of installing a sink in a worktop cut-out, including: (a) providing a sink with: a bowl with a bottom wall and a circumferential side wall; at least one outlet opening located in the bottom; a circumferential rim located at an upper edge of the bowl and extending outwardly from the side wall by an extent (E); resilient clamping elements arranged on the outside of the bowl adjacent the rim, that in a free or uncompressed state, extend outwardly beyond the extent (E), and which provide, in a loaded state, a clamping force outwardly from the side wall; (b) making the worktop cut-out larger in dimension than a rim area but smaller than an envelope around the uncompressed clamping elements while defining a cut-out side wall extending at right angles to upper and lower surfaces of the worktop; (c) placing the sink in the cut-out so that the cut-out side wall is located opposite the rim, the sink being centered within the cut-out by the clamping elements, which are compressed between the cut-out side wall and the sink.