SIR – I would like to assure Mrs Hencher (July 5) that I certainly wasn’t judging her husband’s motives in supporting the British Heart Foundation. My sister has a serious heart condition and the animal-tested drugs she was given made her ill. So now she is waiting for the day when animal testing is outlawed and real science is used, so that she can have help.

Charities should be made aware that more then 250,000 Britons are hospitalised every year by adverse drug reactions.

Charities should only be funding non-animal research.