I have been having a little look at the many boxes that my parents have amassed , and I have found a schoolmaster's report of the progress of the education and health of the immigrants' children on the Coromandel.
I'm not sure if I have anything that would help you, I have so many boxes of things from my parents (John and Betty Durrant) they were very keen and did a lot of research, including the New Zealand and Canadian connections. You are mainly interested in Durrants in the UK?