The exhibition is, inevitably, a portmanteau show of china, silver, furniture, miniatures, jewellery, knick- knacks and sentimental memorabilia, together with a too-small taste of the paintings and drawings by old masters that George III bought from the British Consul in Venice in 1762 - a most perceptive purchase for a young man of 24, perhaps influenced by Bute. The art historian longs for more material of the high seriousness that he knows could be on view, but must be content with sublime drawings by Raphael and Guercino, fine paintings by Canaletto, and minor, but amusing, things by Longhi and Zucarelli.