Three schoolchildren were hospitalised after being poisoned at an Oxfordshire school. The secondary school pupils were rushed to hospital after being poisoned with diluted copper sulphate at Lord Williams's School on Oxford Road in Thame last week. They have since returned home following the scare, which led to Thames Valley Police getting involved. Headteacher Neil Dimbleby said on Monday afternoon: "Three students stayed in hospital overnight having ingested diluted Copper Sulphate that had