These memories are held in 'Caldecott Community at Hyde House'
Click this link to read Hyde House Remembered, by Barbara Lee
The earliest record found so far is a photograph taken at the 1951 reunion at Mersham-le-Hatch, kindly donated by an attendee John Hansen.
Nominally, reunions were to take place every two years, but from available records (mainly photographic) there were obviously periods when such regularity failed.
Extensive images of many reunions can be found in the 'Reunions' section of the Image Gallery.