Nash, John

English architect. His large country-house practice, established about 1796 with the landscape gardener Humphry Repton, used a wide variety of styles, and by 1798 he was enjoying the patronage of the Prince of Wales (afterwards George IV). Later he laid out Regent's Park, London, and its approaches, as well as Trafalgar Square and St James's Park. Between 1811 and 1821 he planned Regent Street (later rebuilt), repaired and enlarged Buckingham Palace (for which he designed Marble Arch), and rebuilt the Royal Pavilion, Brighton, in flamboyant oriental style.

For himself he built East Cowes Castle (1798) which greatly influenced the early Gothic Revival.