Heart Angels: Colchester Oyster Festival (6 September 2014) 13 This image appears in the gallery:Heart Angels: Colchester Oyster Festival (6 September 2014) 16. Heart Angels: Colchester Oyster Festival (6 September 2014) 13 These beautiful donkeys where also available for a gentle ride. 46 images See the full gallery: Heart Angels: Colchester Oyster Festival (6 September 2014)