1950 – Scarborough
1951 – Bleasby, Lincolnshire
1953 – Asilah, Morocco
1954 – Spalding, Lincolnshire
1956 – Kishinev, Moldova
1957 – Ibid.
1961 – Walton-on-the-Naze
1962 – Ibid.
1963 – Bogor, Java
1964 – Parktown, Oxford
1965 – Walton-on-the-Naze
1969 – Brno
1971 – Warsaw
1972 – Cirebon, Java
1975 – Manhattan
1976 – Ramsholt, Suffolk
1977 – Wonersh, Surrey
1982 – Spalding, Lincolnshire
1984 – Jaywick Sands, Essex
1985 – Billericay, Essex
1986 – Budapest
1990 – Jaywick Sands, Essex
1993 – Kishinev, Moldova
1996 – Staten Island, New York