 Witkin's work was well received in his first solo show at Rowan Gallery, London and in an important 1964 show at Whitechapel Gallery, also in London, where Witkin and his fellow Saint Martin's "New Generation" sculptors made their big entry into the English art world.In 1965 his work received a first prize in the Paris Biennale.His piece, "Nagas", was included in the seminal 1966 exhibit, "Primary Structures" at the Jewish Museum in New York representing the British influence on the "New Art" anchored by Anthony Caro.