SketchTwenty3

One small factual note, not a uniqueness issue: sources disagree slightly on when Wilman sold ArtHouse — SketchTwenty3’s own official “Our Story” page says 2007, while a couple of resellers (Hume, St Leger) say 2011 (which would oddly coincide with SketchTwenty3’s founding year and looks like a copy-paste error propagating between those two sites). Your text sidesteps this by not stating a sale year at all — good instinct, since it avoids repeating what looks like an error some retailers have been copying from each other.