A surface assembly and related method of constructing a surface assembly for use as part of a landing platform. The surface assembly comprises a modular structure having an upper surface comprising a plurality of discrete elements, each discrete element comprising a body of metal material defining at least one anchor aperture for receiving a hook or like anchor device for anchoring a helicopter or other powered light aircraft to the surface assembly. The surface assembly is configured to define an array of said plurality of discrete elements in which at least two of said anchor apertures are provided side-by- side, wherein the body of each discrete element has a periphery, and further wherein each anchor aperture of the array is inboard of the periphery of a respective body of a discrete element in the array.
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