It is a plant I have flowered several times in the past, and although the label has gone walk about, I shall remember it one of these days - especially if some kind soul gives me a nudge, like I think its so and so...
Obviously an Oncidium - haha - this is where the Kew gymnastics with names does come in to be helpful ! Otherwise I should have to say, maybe its an Odontcidium, or could it be a Colmanara, and so on...