‘Which way up?’ and ‘What size?’ are recurring questions when viewing the artworks of Tom Ellis. Devices of reflection and re-scaling are extracted from an architectural context and employed with quirky irreverence in this exhibition of models, drawings and ready-mades. Even before his collaboration with architects for this latest show, Tom Ellis' work has shown a fascination with imagined places and structures. Earlier pieces construct, in cheap, clumsy materials, the inaccessible landscapes viewed from a plane window or the envisaged destination of a journey. His explorations of the perceptual effects of scale are sometimes jokey, sometimes profound, but always refreshing and unpretentious.